The Big Bang Theory

Sheldon Cooper

Penny

Leonard Hofstadter

Howard Wolowitz

Rajesh

Bernadette Rostenkowski-Wolowitz

Amy Farrah Fowler

Gilda · S00E01 · Unaired Pilot

Katie · S00E01 · Unaired Pilot

Althea · S00E01 · Unaired Pilot, S01E01 · Pilot, S01E16 · The Peanut Reaction, S04E01 · The Robotic Manipulation, S05E18 · The Werewolf Transformation, S10E11 · The Birthday Synchronicity

Kurt · S01E01 · Pilot, S01E06 · The Middle-Earth Paradigm, S02E14 · The Financial Permeability

Leslie Winkle · S01E03 · The Fuzzy Boots Corollary, S01E05 · The Hamburger Postulate, S01E13 · The Bat Jar Conjecture, S02E02 · The Codpiece Topology, S02E03 · The Barbarian Sublimation, S02E06 · The Cooper-Nowitzki Theorem, S02E16 · The Cushion Saturation, S03E23 · The Lunar Excitation, S09E17 · The Celebration Experimentation

Dance Instructor · S01E03 · The Fuzzy Boots Corollary

Doug · S01E03 · The Fuzzy Boots Corollary

Waitress · S01E03 · The Fuzzy Boots Corollary

Mary Cooper · S01E04 · The Luminous Fish Effect, S03E01 · The Electric Can Opener Fluctuation, S04E03 · The Zazzy Substitution, S05E06 · The Rhinitis Revelation, S07E11 · The Cooper Extraction, S07E18 · The Mommy Observation, S08E23 · The Maternal Combustion, S09E01 · The Matrimonial Momentum, S09E24 · The Convergence Convergence, S10E01 · The Conjugal Conjecture, S10E12 · The Holiday Summation, S11E01 · The Proposal Proposal, S11E13 · The Solo Oscillation, S11E24 · The Bow Tie Asymmetry

Eric Gablehauser · S01E04 · The Luminous Fish Effect, S01E12 · The Jerusalem Duality, S01E13 · The Bat Jar Conjecture, S02E03 · The Barbarian Sublimation, S02E04 · The Griffin Equivalency

Summer · S01E04 · The Luminous Fish Effect

American Shopper (uncredited) · S01E04 · The Luminous Fish Effect

Vicki · S01E06 · The Middle-Earth Paradigm

Cheryl · S01E06 · The Middle-Earth Paradigm, S01E11 · The Pancake Batter Anomaly

Patty · S01E06 · The Middle-Earth Paradigm

Roberta · S01E06 · The Middle-Earth Paradigm

Christy Vanderbel · S01E07 · The Dumpling Paradox

Chen · S01E07 · The Dumpling Paradox, S01E17 · The Tangerine Factor

Debbie Wolowitz (voice) · S01E07 · The Dumpling Paradox, S01E11 · The Pancake Batter Anomaly, S02E01 · The Bad Fish Paradigm, S02E08 · The Lizard-Spock Expansion, S02E12 · The Killer Robot Instability, S02E16 · The Cushion Saturation, S02E19 · The Dead Hooker Juxtaposition, S02E23 · The Monopolar Expedition, S03E07 · The Guitarist Amplification, S03E09 · The Vengeance Formulation, S03E10 · The Gorilla Experiment, S03E22 · The Staircase Implementation, S04E01 · The Robotic Manipulation, S04E04 · The Hot Troll Deviation, S04E05 · The Desperation Emanation, S04E16 · The Cohabitation Formulation, S04E19 · The Zarnecki Incursion, S04E23 · The Engagement Reaction, S04E24 · The Roommate Transmogrification, S05E03 · The Pulled Groin Extrapolation, S05E05 · The Russian Rocket Reaction, S05E12 · The Shiny Trinket Maneuver, S05E15 · The Friendship Contraction, S05E18 · The Werewolf Transformation, S05E19 · The Weekend Vortex, S05E21 · The Hawking Excitation, S05E24 · The Countdown Reflection, S06E01 · The Date Night Variable, S06E04 · The Re-Entry Minimization, S06E07 · The Habitation Configuration, S06E15 · The Spoiler Alert Segmentation, S07E09 · The Thanksgiving Decoupling, S07E11 · The Cooper Extraction, S07E16 · The Table Polarization, S07E21 · The Anything Can Happen Recurrence, S07E23 · The Gorilla Dissolution, S07E24 · The Status Quo Combustion, S08E01 · The Locomotion Interruption, S08E08 · The Prom Equivalency, S11E09 · The Bitcoin Entanglement

Automated Cell Phone Voice (voice) · S01E07 · The Dumpling Paradox

Mrs. Koothrappali · S01E08 · The Grasshopper Experiment, S02E04 · The Griffin Equivalency, S02E23 · The Monopolar Expedition, S03E07 · The Guitarist Amplification, S04E20 · The Herb Garden Germination, S04E24 · The Roommate Transmogrification, S05E02 · The Infestation Hypothesis, S05E04 · The Wiggly Finger Catalyst, S05E20 · The Transporter Malfunction, S08E22 · The Graduation Transmission

V.M. Koothrappali · S01E08 · The Grasshopper Experiment, S02E04 · The Griffin Equivalency, S02E23 · The Monopolar Expedition, S03E07 · The Guitarist Amplification, S04E20 · The Herb Garden Germination, S04E24 · The Roommate Transmogrification, S05E02 · The Infestation Hypothesis, S05E04 · The Wiggly Finger Catalyst, S05E20 · The Transporter Malfunction, S08E11 · The Clean Room Infiltration, S08E22 · The Graduation Transmission, S10E03 · The Dependence Transcendence, S10E16 · The Allowance Evaporation, S11E10 · The Confidence Erosion, S12E02 · The Wedding Gift Wormhole, S12E12 · The Propagation Proposition

Lalita Gupta · S01E08 · The Grasshopper Experiment

Chinese Leonard · S01E09 · The Cooper-Hofstadter Polarization

Chinese Sheldon · S01E09 · The Cooper-Hofstadter Polarization

Toby Loobenfeld · S01E10 · The Loobenfeld Decay

Emma · S01E12 · The Jerusalem Duality

Professor Goldfarb · S01E12 · The Jerusalem Duality

Dennis Kim · S01E12 · The Jerusalem Duality

Woman · S01E13 · The Bat Jar Conjecture

Son · S01E13 · The Bat Jar Conjecture

Dmitri · S01E13 · The Bat Jar Conjecture

Mike · S01E14 · The Nerdvana Annihilation

Missy Cooper · S01E15 · The Pork Chop Indeterminacy, S11E24 · The Bow Tie Asymmetry

Jan · S01E16 · The Peanut Reaction

Dan · S01E16 · The Peanut Reaction

Stan · S01E16 · The Peanut Reaction

Eric · S02E02 · The Codpiece Topology

Blaine · S02E03 · The Barbarian Sublimation

Tom · S02E03 · The Barbarian Sublimation

Charlie Sheen · S02E04 · The Griffin Equivalency

Octavia · S02E05 · The Euclid Alternative

Maria · S02E05 · The Euclid Alternative, S09E06 · The Helium Insufficiency

Lourdes · S02E05 · The Euclid Alternative

Ramona Nowitzki · S02E06 · The Cooper-Nowitzki Theorem, S10E24 · The Long Distance Dissonance, S11E01 · The Proposal Proposal

Kathy O'Brien · S02E06 · The Cooper-Nowitzki Theorem

Analeigh Tipton · S02E07 · The Panty Piñata Polarization

Model · S02E07 · The Panty Piñata Polarization

Announcer (voice) · S02E08 · The Lizard-Spock Expansion

Stephanie Barnett · S02E08 · The Lizard-Spock Expansion, S02E09 · The White Asparagus Triangulation, S02E10 · The Vartabedian Conundrum

News Announcer (voice) · S02E08 · The Lizard-Spock Expansion

David Underhill · S02E11 · The Bath Item Gift Hypothesis

Charlotte · S02E11 · The Bath Item Gift Hypothesis

Barry Kripke · S02E12 · The Killer Robot Instability, S02E13 · The Friendship Algorithm, S03E01 · The Electric Can Opener Fluctuation, S03E09 · The Vengeance Formulation, S04E17 · The Toast Derivation, S05E14 · The Beta Test Initiation, S05E17 · The Rothman Disintegration, S05E22 · The Stag Convergence, S06E14 · The Cooper/Kripke Inversion, S06E20 · The Tenure Turbulence, S07E10 · The Discovery Dissipation, S07E20 · The Relationship Diremption, S08E10 · The Champagne Reflection, S08E15 · The Comic Book Store Regeneration, S09E05 · The Perspiration Implementation, S09E06 · The Helium Insufficiency, S09E15 · The Valentino Submergence, S09E17 · The Celebration Experimentation, S10E09 · The Geology Elevation, S11E08 · The Tesla Recoil, S11E17 · The Athenaeum Allocation, S11E24 · The Bow Tie Asymmetry, S12E07 · The Grant Allocation Derivation, S12E21 · The Plagiarism Schism, S12E23 · The Change Constant / The Stockholm Syndrome

Jeremy · S02E13 · The Friendship Algorithm

Mildred · S02E13 · The Friendship Algorithm

Rebecca · S02E13 · The Friendship Algorithm

Beverly Hofstadter · S02E15 · The Maternal Capacitance, S03E11 · The Maternal Congruence, S05E01 · The Skank Reflex Analysis, S07E04 · The Raiders Minimization, S07E24 · The Status Quo Combustion, S08E23 · The Maternal Combustion, S09E17 · The Celebration Experimentation, S09E23 · The Line Substitution Solution, S09E24 · The Convergence Convergence, S10E01 · The Conjugal Conjecture, S10E18 · The Escape Hatch Identification, S11E04 · The Explosion Implosion, S11E15 · The Novelization Correlation, S12E10 · The VCR Illumination, S12E17 · The Conference Valuation, S12E22 · The Maternal Conclusion

Summer Glau · S02E17 · The Terminator Decoupling

Train Conductor (voice) · S02E17 · The Terminator Decoupling

George F. Smoot · S02E17 · The Terminator Decoupling, S12E18 · The Laureate Accumulation

Alicia · S02E19 · The Dead Hooker Juxtaposition

Stuart Bloom · S02E20 · The Hofstadter Isotope, S02E22 · The Classified Materials Turbulence, S03E05 · The Creepy Candy Coating Corollary, S03E07 · The Guitarist Amplification, S03E16 · The Excelsior Acquisition, S03E19 · The Wheaton Recurrence, S04E05 · The Desperation Emanation, S04E11 · The Justice League Recombination, S04E17 · The Toast Derivation, S05E05 · The Russian Rocket Reaction, S05E07 · The Good Guy Fluctuation, S05E10 · The Flaming Spittoon Acquisition, S05E15 · The Friendship Contraction, S05E19 · The Weekend Vortex, S05E22 · The Stag Convergence, S06E01 · The Date Night Variable, S06E02 · The Decoupling Fluctuation, S06E04 · The Re-Entry Minimization, S06E05 · The Holographic Excitation, S06E11 · The Santa Simulation, S06E13 · The Bakersfield Expedition, S06E16 · The Tangible Affection Proof, S06E17 · The Monster Isolation, S07E02 · The Deception Verification, S07E03 · The Scavenger Vortex, S07E04 · The Raiders Minimization, S07E11 · The Cooper Extraction, S07E12 · The Hesitation Ramification, S07E13 · The Occupation Recalibration, S07E18 · The Mommy Observation, S07E24 · The Status Quo Combustion, S08E01 · The Locomotion Interruption, S08E04 · The Hook-Up Reverberation, S08E08 · The Prom Equivalency, S08E15 · The Comic Book Store Regeneration, S08E18 · The Leftover Thermalization, S08E23 · The Maternal Combustion, S08E24 · The Commitment Determination, S09E01 · The Matrimonial Momentum, S09E04 · The 2003 Approximation, S09E05 · The Perspiration Implementation, S09E06 · The Helium Insufficiency, S09E11 · The Opening Night Excitation, S09E12 · The Sales Call Sublimation, S09E13 · The Empathy Optimization, S09E17 · The Celebration Experimentation, S09E21 · The Viewing Party Combustion, S09E23 · The Line Substitution Solution, S10E01 · The Conjugal Conjecture, S10E05 · The Hot Tub Contamination, S10E06 · The Fetal Kick Catalyst, S10E10 · The Property Division Collision, S10E11 · The Birthday Synchronicity, S10E12 · The Holiday Summation, S10E15 · The Locomotion Reverberation, S10E17 · The Comic-Con Conundrum, S10E18 · The Escape Hatch Identification, S10E20 · The Recollection Dissipation, S10E21 · The Separation Agitation, S10E24 · The Long Distance Dissonance, S11E01 · The Proposal Proposal, S11E03 · The Relaxation Integration, S11E07 · The Geology Methodology, S11E09 · The Bitcoin Entanglement, S11E10 · The Confidence Erosion, S11E11 · The Celebration Reverberation, S11E12 · The Matrimonial Metric, S11E15 · The Novelization Correlation, S11E18 · The Gates Excitation, S11E19 · The Tenant Disassociation, S11E21 · The Comet Polarization, S11E22 · The Monetary Insufficiency, S11E24 · The Bow Tie Asymmetry, S12E02 · The Wedding Gift Wormhole, S12E03 · The Procreation Calculation, S12E06 · The Imitation Perturbation, S12E08 · The Consummation Deviation, S12E11 · The Paintball Scattering, S12E14 · The Meteorite Manifestation, S12E16 · The D & D Vortex, S12E17 · The Conference Valuation, S12E18 · The Laureate Accumulation, S12E22 · The Maternal Conclusion, S12E23 · The Change Constant / The Stockholm Syndrome

Mikayla · S02E21 · The Vegas Renormalization

Ground Controller (voice) · S02E22 · The Classified Materials Turbulence

Astronaut (voice) · S02E22 · The Classified Materials Turbulence

Professor Crawley · S03E02 · The Jiminy Conjecture

Bethany · S03E03 · The Gothowitz Deviation

Sarah · S03E03 · The Gothowitz Deviation

Skeeter · S03E03 · The Gothowitz Deviation

Catherine Millstone · S03E04 · The Pirate Solution

Professor Laughlin · S03E04 · The Pirate Solution

Wil Wheaton · S03E05 · The Creepy Candy Coating Corollary, S03E19 · The Wheaton Recurrence, S04E08 · The 21-Second Excitation, S05E05 · The Russian Rocket Reaction, S05E22 · The Stag Convergence, S06E07 · The Habitation Configuration, S07E10 · The Discovery Dissipation, S07E19 · The Indecision Amalgamation, S07E23 · The Gorilla Dissolution, S08E20 · The Fortification Implementation, S09E07 · The Spock Resonance, S09E11 · The Opening Night Excitation, S09E17 · The Celebration Experimentation, S11E06 · The Proton Regeneration, S11E15 · The Novelization Correlation, S11E24 · The Bow Tie Asymmetry, S12E16 · The D & D Vortex

Todd · S03E06 · The Cornhusker Vortex

Denny · S03E06 · The Cornhusker Vortex

Ira Flatow (voice) · S03E09 · The Vengeance Formulation

Katee Sackhoff · S03E09 · The Vengeance Formulation, S04E04 · The Hot Troll Deviation

Abby · S03E12 · The Psychic Vortex

Waiter · S03E12 · The Psychic Vortex, S06E23 · The Love Spell Potential

Martha · S03E12 · The Psychic Vortex

Officer Hackett · S03E13 · The Bozeman Reaction

Young Man · S03E13 · The Bozeman Reaction

Sandy · S03E14 · The Einstein Approximation

Glen · S03E14 · The Einstein Approximation

Security Guard · S03E16 · The Excelsior Acquisition, S07E12 · The Hesitation Ramification

Stan Lee · S03E16 · The Excelsior Acquisition

Judge J. Kirby · S03E16 · The Excelsior Acquisition

Venkatesh Koothrappali · S03E17 · The Precious Fragmentation

Elizabeth Plimpton · S03E21 · The Plimpton Stimulation

Announcer (voice) · S03E22 · The Staircase Implementation, S04E13 · The Love Car Displacement

Joyce Kim · S03E22 · The Staircase Implementation

Sebastian · S03E22 · The Staircase Implementation

Louie · S03E22 · The Staircase Implementation

Mrs. Gunderson · S03E23 · The Lunar Excitation

Zack Johnson · S03E23 · The Lunar Excitation, S04E10 · The Alien Parasite Hypothesis, S04E11 · The Justice League Recombination, S04E17 · The Toast Derivation, S07E09 · The Thanksgiving Decoupling, S07E11 · The Cooper Extraction, S09E22 · The Fermentation Bifurcation, S10E22 · The Cognition Regeneration, S11E09 · The Bitcoin Entanglement, S12E12 · The Propagation Proposition, S12E15 · The Donation Oscillation

Steve Wozniak · S04E02 · The Cruciferous Vegetable Amplification

George Takei · S04E04 · The Hot Troll Deviation

Mrs. Fowler · S04E05 · The Desperation Emanation

Joy · S04E05 · The Desperation Emanation

Priya Koothrappali · S04E06 · The Irish Pub Formulation, S04E16 · The Cohabitation Formulation, S04E17 · The Toast Derivation, S04E18 · The Prestidigitation Approximation, S04E19 · The Zarnecki Incursion, S04E20 · The Herb Garden Germination, S04E21 · The Agreement Dissection, S04E22 · The Wildebeest Implementation, S04E23 · The Engagement Reaction, S04E24 · The Roommate Transmogrification, S05E02 · The Infestation Hypothesis, S05E07 · The Good Guy Fluctuation

Angela Page · S04E07 · The Apology Insufficiency

Neil deGrasse Tyson · S04E07 · The Apology Insufficiency, S12E01 · The Conjugal Configuration

Joey · S04E08 · The 21-Second Excitation

Wyatt Teller · S04E09 · The Boyfriend Complexity, S09E03 · The Bachelor Party Corrosion, S10E01 · The Conjugal Conjecture, S12E03 · The Procreation Calculation, S12E15 · The Donation Oscillation

Glenn · S04E13 · The Love Car Displacement

Mrs. Latham · S04E15 · The Benefactor Factor

President Siebert · S04E15 · The Benefactor Factor, S05E16 · The Vacation Solution, S05E17 · The Rothman Disintegration, S11E22 · The Monetary Insufficiency, S12E05 · The Planetarium Collision, S12E07 · The Grant Allocation Derivation, S12E11 · The Paintball Scattering, S12E13 · The Confirmation Polarization, S12E18 · The Laureate Accumulation, S12E19 · The Inspiration Deprivation, S12E20 · The Decision Reverberation, S12E21 · The Plagiarism Schism, S12E23 · The Change Constant / The Stockholm Syndrome

LeVar Burton · S04E17 · The Toast Derivation, S06E07 · The Habitation Configuration, S08E10 · The Champagne Reflection

Officer Shin · S04E19 · The Zarnecki Incursion

Todd Zarnecki · S04E19 · The Zarnecki Incursion

Brian Greene · S04E20 · The Herb Garden Germination

Ho-Jun · S04E21 · The Agreement Dissection

Dispatcher (voice) · S04E21 · The Agreement Dissection

Angela · S04E22 · The Wildebeest Implementation

Elsie · S04E22 · The Wildebeest Implementation

Dr. Bernstein · S04E23 · The Engagement Reaction

Nurse in Biohazard Suit · S04E23 · The Engagement Reaction

Sandy · S05E01 · The Skank Reflex Analysis

Emily · S05E04 · The Wiggly Finger Catalyst, S10E14 · The Emotion Detection Automation

Brent Spiner (uncredited) · S05E05 · The Russian Rocket Reaction

Alice · S05E07 · The Good Guy Fluctuation

Kevin · S05E09 · The Ornithophobia Diffusion

Laura · S05E09 · The Ornithophobia Diffusion

Dale · S05E10 · The Flaming Spittoon Acquisition, S06E16 · The Tangible Affection Proof

Jimmy Speckerman · S05E11 · The Speckerman Recurrence

Jonathan · S05E12 · The Shiny Trinket Maneuver

Aaron · S05E12 · The Shiny Trinket Maneuver

Jeremy · S05E12 · The Shiny Trinket Maneuver

Reverend White · S05E13 · The Recombination Hypothesis

Siri (voice) · S05E14 · The Beta Test Initiation

Security Guard · S05E14 · The Beta Test Initiation

Michael J. Massimino · S05E15 · The Friendship Contraction, S05E24 · The Countdown Reflection, S06E02 · The Decoupling Fluctuation, S06E04 · The Re-Entry Minimization, S07E16 · The Table Polarization, S08E03 · The First Pitch Insufficiency

Phil · S05E16 · The Vacation Solution

Professor Rothman · S05E17 · The Rothman Disintegration

Angelo · S05E18 · The Werewolf Transformation

Lakshmi Choudry · S05E20 · The Transporter Malfunction

Mr. Spock (voice) · S05E20 · The Transporter Malfunction

Stephen Hawking · S05E21 · The Hawking Excitation, S06E06 · The Extract Obliteration, S07E20 · The Relationship Diremption, S08E14 · The Troll Manifestation, S09E17 · The Celebration Experimentation, S10E09 · The Geology Elevation, S11E01 · The Proposal Proposal

Mike Rostenkowski · S05E23 · The Launch Acceleration, S05E24 · The Countdown Reflection, S06E10 · The Fish Guts Displacement, S07E09 · The Thanksgiving Decoupling, S07E16 · The Table Polarization, S09E07 · The Spock Resonance

Dave Roeger (voice) · S05E23 · The Launch Acceleration

Jimmy · S05E23 · The Launch Acceleration

Joan · S05E24 · The Countdown Reflection

Russian Mission Control (voice) · S05E24 · The Countdown Reflection

Dimitri · S05E24 · The Countdown Reflection, S06E01 · The Date Night Variable, S06E02 · The Decoupling Fluctuation, S06E03 · The Higgs Boson Observation, S06E04 · The Re-Entry Minimization

Guy at the Movies (uncredited) · S06E02 · The Decoupling Fluctuation

Alex Jensen · S06E03 · The Higgs Boson Observation, S06E08 · The 43 Peculiarity, S06E12 · The Egg Salad Equivalency, S06E16 · The Tangible Affection Proof

Dr. Schneider · S06E04 · The Re-Entry Minimization

Lillian · S06E04 · The Re-Entry Minimization

Chauffeur · S06E04 · The Re-Entry Minimization

Howie Mandel · S06E04 · The Re-Entry Minimization

Buzz Aldrin · S06E05 · The Holographic Excitation

Claire · S06E05 · The Holographic Excitation

Cole · S06E08 · The 43 Peculiarity

Dry Cleaner · S06E09 · The Parking Spot Escalation

Mrs. Rostenkowski · S06E10 · The Fish Guts Displacement

Santa Claus · S06E11 · The Santa Simulation, S08E11 · The Clean Room Infiltration

Janine Davis · S06E12 · The Egg Salad Equivalency, S06E20 · The Tenure Turbulence, S07E01 · The Hofstadter Insufficiency, S08E02 · The Junior Professor Solution, S11E02 · The Retraction Reaction, S12E19 · The Inspiration Deprivation

Officer Reynolds · S06E13 · The Bakersfield Expedition

Lana · S06E13 · The Bakersfield Expedition

Car Thief #1 · S06E13 · The Bakersfield Expedition

Car Thief #2 · S06E13 · The Bakersfield Expedition

Guy · S06E13 · The Bakersfield Expedition

Captain Sweatpants (uncredited) · S06E13 · The Bakersfield Expedition, S06E16 · The Tangible Affection Proof

Lucy · S06E16 · The Tangible Affection Proof, S06E17 · The Monster Isolation, S06E18 · The Contractual Obligation Implementation, S06E21 · The Closure Alternative, S06E23 · The Love Spell Potential, S06E24 · The Bon Voyage Reaction, S07E08 · The Itchy Brain Simulation, S10E14 · The Emotion Detection Automation

Gretchen · S06E16 · The Tangible Affection Proof

Comic Book Store Customer (uncredited) · S06E16 · The Tangible Affection Proof

Tom · S06E17 · The Monster Isolation

Girl #1 · S06E18 · The Contractual Obligation Implementation

Girl #2 · S06E18 · The Contractual Obligation Implementation

Justin · S06E18 · The Contractual Obligation Implementation

Bert Kibbler · S06E18 · The Contractual Obligation Implementation, S07E13 · The Occupation Recalibration, S10E03 · The Dependence Transcendence, S10E06 · The Fetal Kick Catalyst, S10E09 · The Geology Elevation, S10E16 · The Allowance Evaporation, S10E21 · The Separation Agitation, S11E07 · The Geology Methodology, S11E13 · The Solo Oscillation, S11E24 · The Bow Tie Asymmetry, S12E02 · The Wedding Gift Wormhole, S12E06 · The Imitation Perturbation, S12E14 · The Meteorite Manifestation, S12E19 · The Inspiration Deprivation, S12E23 · The Change Constant / The Stockholm Syndrome

Eye Rolling Girl Student (uncredited) · S06E18 · The Contractual Obligation Implementation

Library Graduate Student (uncredited) · S06E18 · The Contractual Obligation Implementation

Paramedic · S06E22 · The Proton Resurgence

Arthur Jeffries · S06E22 · The Proton Resurgence, S07E07 · The Proton Displacement, S07E22 · The Proton Transmogrification, S09E11 · The Opening Night Excitation, S11E06 · The Proton Regeneration, S12E05 · The Planetarium Collision

Grace · S07E01 · The Hofstadter Insufficiency

Waiter · S07E01 · The Hofstadter Insufficiency, S07E15 · The Locomotive Manipulation

Scientist · S07E01 · The Hofstadter Insufficiency

Pizza Delivery Guy · S07E02 · The Deception Verification

Woman · S07E04 · The Raiders Minimization

Dr. Gunderson · S07E05 · The Workplace Proximity

Scientist · S07E05 · The Workplace Proximity

Student · S07E06 · The Romance Resonance

Bill Nye · S07E07 · The Proton Displacement, S12E01 · The Conjugal Configuration

Lizzy · S07E08 · The Itchy Brain Simulation

Cheesecake Factory Patron · S07E08 · The Itchy Brain Simulation

Ira Flatow · S07E10 · The Discovery Dissipation, S11E02 · The Retraction Reaction

Man V.O. (voice) · S07E13 · The Occupation Recalibration

Captain Sweatpants · S07E13 · The Occupation Recalibration

Jesse · S07E13 · The Occupation Recalibration

James Earl Jones · S07E14 · The Convention Conundrum

Carrie Fisher · S07E14 · The Convention Conundrum

Eric · S07E15 · The Locomotive Manipulation

Yvette · S07E15 · The Locomotive Manipulation

Dr. Dreyfus · S07E16 · The Table Polarization

Emily Sweeney · S07E17 · The Friendship Turbulence, S07E19 · The Indecision Amalgamation, S07E20 · The Relationship Diremption, S07E21 · The Anything Can Happen Recurrence, S07E23 · The Gorilla Dissolution, S08E04 · The Hook-Up Reverberation, S08E08 · The Prom Equivalency, S08E13 · The Anxiety Optimization, S08E16 · The Intimacy Acceleration, S08E17 · The Colonization Application, S08E24 · The Commitment Determination, S09E04 · The 2003 Approximation, S09E09 · The Platonic Permutation, S09E13 · The Empathy Optimization, S09E15 · The Valentino Submergence, S09E18 · The Application Deterioration, S10E14 · The Emotion Detection Automation

Flight Attendant (voice) · S07E17 · The Friendship Turbulence

Salesperson · S07E19 · The Indecision Amalgamation

Wardrobe Person · S07E19 · The Indecision Amalgamation

Voicemail (voice) · S07E20 · The Relationship Diremption

Ms. Davora · S07E21 · The Anything Can Happen Recurrence

Marta · S07E23 · The Gorilla Dissolution

Travis · S07E23 · The Gorilla Dissolution

Kenneth · S07E23 · The Gorilla Dissolution

Maria · S07E24 · The Status Quo Combustion

Dan · S08E01 · The Locomotion Interruption, S08E10 · The Champagne Reflection

Officer Hernandez · S08E01 · The Locomotion Interruption

Man · S08E01 · The Locomotion Interruption

Woman · S08E01 · The Locomotion Interruption

Older Gentleman · S08E01 · The Locomotion Interruption

Roy · S08E03 · The First Pitch Insufficiency

Stadium Announcer (voice) · S08E03 · The First Pitch Insufficiency

Oliver Lorvis · S08E07 · The Misinterpretation Agitation

Mrs. Lorvis (voice) · S08E07 · The Misinterpretation Agitation

Jeanie · S08E08 · The Prom Equivalency

Professor Sharpe · S08E10 · The Champagne Reflection

Photographer · S08E11 · The Clean Room Infiltration

Older Indian Man · S08E12 · The Space Probe Disintegration

Man · S08E13 · The Anxiety Optimization

Doctor (voice) · S08E14 · The Troll Manifestation

Nathan Fillion · S08E15 · The Comic Book Store Regeneration

Hostess · S08E15 · The Comic Book Store Regeneration

Cindy · S08E16 · The Intimacy Acceleration

Hostess · S08E16 · The Intimacy Acceleration

Zombie · S08E16 · The Intimacy Acceleration

Airport Pedestrian · S08E16 · The Intimacy Acceleration

Mitchell · S08E19 · The Skywalker Incursion

Security Guard · S08E19 · The Skywalker Incursion

Security Guard #2 (voice) · S08E19 · The Skywalker Incursion

Josh Wolowitz · S08E20 · The Fortification Implementation

Caller (voice) · S08E20 · The Fortification Implementation

Kevin Smith · S08E20 · The Fortification Implementation, S12E16 · The D & D Vortex

Gwen · S08E21 · The Communication Deterioration

Chelsea · S08E21 · The Communication Deterioration

Casting Assistant · S08E21 · The Communication Deterioration

Alien (voice) · S08E21 · The Communication Deterioration

Alien #2 (voice) · S08E21 · The Communication Deterioration

Tech Support (voice) · S08E22 · The Graduation Transmission

Tech Support Recording (voice) · S08E22 · The Graduation Transmission

Minister · S09E01 · The Matrimonial Momentum

Receptionist · S09E01 · The Matrimonial Momentum

Mandy Chao · S09E02 · The Separation Oscillation

Candidate #1 · S09E04 · The 2003 Approximation

Candidate #2 · S09E04 · The 2003 Approximation

Candidate #3 · S09E04 · The 2003 Approximation

Natalie · S09E05 · The Perspiration Implementation

Grace · S09E05 · The Perspiration Implementation

Attractive Red Head · S09E05 · The Perspiration Implementation

Kenny Fitzgerald · S09E06 · The Helium Insufficiency

Adam Nimoy · S09E07 · The Spock Resonance

Dave Gibbs · S09E07 · The Spock Resonance, S09E08 · The Mystery Date Observation, S09E10 · The Earworm Reverberation

Vanessa Bennett · S09E08 · The Mystery Date Observation

Elon Musk · S09E09 · The Platonic Permutation

Travis · S09E09 · The Platonic Permutation

Trent Monaco · S09E10 · The Earworm Reverberation

Moviegoer (voice) · S09E11 · The Opening Night Excitation

Dr. Gallow · S09E12 · The Sales Call Sublimation

Connie Tucker · S09E14 · The Meemaw Materialization

Claire · S09E14 · The Meemaw Materialization, S09E15 · The Valentino Submergence, S09E18 · The Application Deterioration, S09E22 · The Fermentation Bifurcation, S10E14 · The Emotion Detection Automation

Five Year Old · S09E14 · The Meemaw Materialization

Glenn the Maitre D' · S09E15 · The Valentino Submergence

Customer · S09E15 · The Valentino Submergence

Adam West · S09E17 · The Celebration Experimentation

Tim · S09E18 · The Application Deterioration

Andre · S09E19 · The Solder Excursion Diversion

Trevor · S09E23 · The Line Substitution Solution

Ainsley · S09E23 · The Line Substitution Solution

Alfred Hofstadter · S09E24 · The Convergence Convergence, S10E01 · The Conjugal Conjecture

Police Officer · S09E24 · The Convergence Convergence

Susan Teller · S10E01 · The Conjugal Conjecture

Randall Teller · S10E01 · The Conjugal Conjecture

Richard Williams · S10E01 · The Conjugal Conjecture, S10E02 · The Military Miniaturization, S10E03 · The Dependence Transcendence, S10E15 · The Locomotion Reverberation, S10E23 · The Gyroscopic Collapse, S11E08 · The Tesla Recoil

Marty · S10E02 · The Military Miniaturization

Computer (voice) · S10E02 · The Military Miniaturization, S10E23 · The Gyroscopic Collapse

The Flash · S10E03 · The Dependence Transcendence

Daniel · S10E06 · The Fetal Kick Catalyst

Christopher · S10E06 · The Fetal Kick Catalyst

Jeff · S10E06 · The Fetal Kick Catalyst

Nolan · S10E06 · The Fetal Kick Catalyst

Mrs. Petrescu · S10E06 · The Fetal Kick Catalyst, S11E19 · The Tenant Disassociation

Issabella · S10E08 · The Brain Bowl Incubation

Ellen DeGeneres · S10E09 · The Geology Elevation, S12E18 · The Laureate Accumulation

Theodore · S10E10 · The Property Division Collision

Halley Wolowitz (voice) · S10E11 · The Birthday Synchronicity, S10E12 · The Holiday Summation, S10E15 · The Locomotion Reverberation, S10E17 · The Comic-Con Conundrum, S10E19 · The Collaboration Fluctuation, S11E06 · The Proton Regeneration, S11E13 · The Solo Oscillation, S12E06 · The Imitation Perturbation, S12E17 · The Conference Valuation, S12E18 · The Laureate Accumulation

Clerk · S10E19 · The Collaboration Fluctuation

Stranger · S10E19 · The Collaboration Fluctuation

Doug · S10E20 · The Recollection Dissipation

Rebecca · S10E21 · The Separation Agitation

Dr. Harris · S11E01 · The Proposal Proposal

Dr. Zane · S11E01 · The Proposal Proposal

Ruchi · S11E03 · The Relaxation Integration, S11E07 · The Geology Methodology, S11E08 · The Tesla Recoil

Dr. Sanders · S11E04 · The Explosion Implosion

Police Officer · S11E04 · The Explosion Implosion

Employee · S11E05 · The Collaboration Contamination

Nurse · S11E06 · The Proton Regeneration

Man · S11E06 · The Proton Regeneration

Rose Lady · S11E07 · The Geology Methodology

Man · S11E09 · The Bitcoin Entanglement

Danielle · S11E10 · The Confidence Erosion

Denise · S11E10 · The Confidence Erosion

Clerk · S11E10 · The Confidence Erosion

Toby · S11E13 · The Solo Oscillation

Nell · S11E14 · The Separation Triangulation

Oliver · S11E14 · The Separation Triangulation

Jess · S11E17 · The Athenaeum Allocation, S12E13 · The Confirmation Polarization

Kathleen · S11E17 · The Athenaeum Allocation

Bill Gates · S11E18 · The Gates Excitation

Marta · S11E18 · The Gates Excitation

Letty · S11E18 · The Gates Excitation

Marcus · S11E19 · The Tenant Disassociation

Wendell · S11E19 · The Tenant Disassociation

Cynthia · S11E19 · The Tenant Disassociation

Robert Wolcott · S11E20 · The Reclusive Potential

Bartender · S11E20 · The Reclusive Potential

Nicholas · S11E20 · The Reclusive Potential

Lecturer (voice) · S11E20 · The Reclusive Potential

Neil Gaiman · S11E21 · The Comet Polarization

Grant · S11E21 · The Comet Polarization

Denise · S11E21 · The Comet Polarization, S11E24 · The Bow Tie Asymmetry, S12E02 · The Wedding Gift Wormhole, S12E03 · The Procreation Calculation, S12E09 · The Citation Negation, S12E11 · The Paintball Scattering, S12E14 · The Meteorite Manifestation, S12E22 · The Maternal Conclusion

Pit Boss · S11E22 · The Monetary Insufficiency

Croupier · S11E22 · The Monetary Insufficiency

Hostess · S11E22 · The Monetary Insufficiency

Earl · S11E22 · The Monetary Insufficiency

Georgie Cooper · S11E23 · The Sibling Realignment, S11E24 · The Bow Tie Asymmetry, S12E04 · The Tam Turbulence

Jenna · S11E23 · The Sibling Realignment

Margaret · S11E23 · The Sibling Realignment

Mark Hamill · S11E24 · The Bow Tie Asymmetry

Mrs. Fowler · S11E24 · The Bow Tie Asymmetry, S12E01 · The Conjugal Configuration, S12E08 · The Consummation Deviation

Larry Fowler · S11E24 · The Bow Tie Asymmetry, S12E01 · The Conjugal Configuration, S12E08 · The Consummation Deviation

Bellman · S12E01 · The Conjugal Configuration

Sunny Morrow · S12E01 · The Conjugal Configuration

Tour Guide · S12E01 · The Conjugal Configuration

Bike Messenger (uncredited) · S12E01 · The Conjugal Configuration

Greg · S12E02 · The Wedding Gift Wormhole

Leslie · S12E02 · The Wedding Gift Wormhole

Waiter · S12E03 · The Procreation Calculation

Anu · S12E03 · The Procreation Calculation, S12E04 · The Tam Turbulence, S12E06 · The Imitation Perturbation, S12E08 · The Consummation Deviation, S12E11 · The Paintball Scattering, S12E12 · The Propagation Proposition, S12E15 · The Donation Oscillation, S12E20 · The Decision Reverberation, S12E22 · The Maternal Conclusion

Tam Nguyen · S12E04 · The Tam Turbulence

Dr. Park · S12E05 · The Planetarium Collision

Andrea · S12E05 · The Planetarium Collision

Colin · S12E05 · The Planetarium Collision

Dr. Graybel · S12E06 · The Imitation Perturbation, S12E20 · The Decision Reverberation

Dr. Lee · S12E07 · The Grant Allocation Derivation

Sheldon Cooper · S12E10 · The VCR Illumination

George Cooper · S12E10 · The VCR Illumination

Georgie Cooper · S12E10 · The VCR Illumination

Judge · S12E10 · The VCR Illumination

Cynthia · S12E11 · The Paintball Scattering

Chad · S12E11 · The Paintball Scattering

Greg · S12E12 · The Propagation Proposition

Bob · S12E12 · The Propagation Proposition

Marissa Johnson · S12E12 · The Propagation Proposition, S12E15 · The Donation Oscillation

Brenda · S12E13 · The Confirmation Polarization

Karen · S12E13 · The Confirmation Polarization, S12E17 · The Conference Valuation

Kevin Campbell · S12E13 · The Confirmation Polarization, S12E18 · The Laureate Accumulation, S12E21 · The Plagiarism Schism

Greg Pemberton · S12E13 · The Confirmation Polarization, S12E18 · The Laureate Accumulation, S12E21 · The Plagiarism Schism

Nathan · S12E14 · The Meteorite Manifestation

Andy (voice) · S12E14 · The Meteorite Manifestation

Linda (voice) · S12E14 · The Meteorite Manifestation

Woman · S12E14 · The Meteorite Manifestation

Neil · S12E15 · The Donation Oscillation

Joe Manganiello · S12E16 · The D & D Vortex

Kareem Abdul-Jabbar · S12E16 · The D & D Vortex

William Shatner · S12E16 · The D & D Vortex

Danny · S12E17 · The Conference Valuation

Darren · S12E17 · The Conference Valuation

Kwame · S12E17 · The Conference Valuation

Frances H. Arnold · S12E18 · The Laureate Accumulation

Kip Thorne · S12E18 · The Laureate Accumulation

Bebe · S12E19 · The Inspiration Deprivation

Woman #1 · S12E19 · The Inspiration Deprivation

Woman #2 · S12E19 · The Inspiration Deprivation

Woman #3 · S12E19 · The Inspiration Deprivation

Woman #4 · S12E19 · The Inspiration Deprivation

Woman #5 · S12E19 · The Inspiration Deprivation

Woman #6 · S12E19 · The Inspiration Deprivation

Woman #7 · S12E19 · The Inspiration Deprivation

Woman #8 · S12E19 · The Inspiration Deprivation

Little Girl · S12E19 · The Inspiration Deprivation

Maritza · S12E20 · The Decision Reverberation

Terry · S12E20 · The Decision Reverberation

Mitch · S12E22 · The Maternal Conclusion

Reporter #2 · S12E23 · The Change Constant / The Stockholm Syndrome

Reporter #1 · S12E23 · The Change Constant / The Stockholm Syndrome

Reporter #3 · S12E23 · The Change Constant / The Stockholm Syndrome

Sarah Michelle Gellar · S12E23 · The Change Constant / The Stockholm Syndrome

Carl XVI Gustaf of Sweden · S12E23 · The Change Constant / The Stockholm Syndrome

Halley Wolowitz · S12E23 · The Change Constant / The Stockholm Syndrome

Michael Wolowitz · S12E23 · The Change Constant / The Stockholm Syndrome

Announcer · S12E23 · The Change Constant / The Stockholm Syndrome

Daniel Westling · S12E23 · The Change Constant / The Stockholm Syndrome