The Bow Tie Asymmetry: Everyone is focused on making sure that the arrangements for Amy and Sheldon's big day go according to plan - except the bride and groom. (S11 Ep24) [AD,S,W]
The Procreation Calculation: Stuart starts bringing his new girlfriend home to Howard and Bernadette's house. Penny and Leonard talk about starting a family. (S12 Ep3) [AD,S,W]
The Conjugal Configuration: Sheldon and Amy's honeymoon runs aground, while Penny and Leonard discover that they are uncomfortably similar to Amy's parents. (S12 Ep1) [AD,S,W]
The Tam Turbulence: When Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend, Leonard tries to find out more. (S12 Ep4) [AD,S,W]
The Wedding Gift Wormhole: A stressed Sheldon and Amy struggle to work out what the 'perfect gift' is that Leonard and Penny gave them on their wedding day. (S12 Ep2) [AD,S,W]
The Procreation Calculation: Stuart starts bringing his new girlfriend home to Howard and Bernadette's house. Penny and Leonard talk about starting a family. (S12 Ep3) [AD,S,W]
The Tam Turbulence: When Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend, Leonard tries to find out more. (S12 Ep4) [AD,S,W]
The Proton Transmogrification: Sheldon struggles to process his feelings of grief when his idol Professor Proton passes away. The gang gather to celebrate Star Wars Day. (S7 Ep22) [AD,S]
The Gorilla Dissolution: Penny re-evaluates her life, including taking a big step with Leonard, while Howard and Bernadette struggle to look after Mrs Wolowitz. (S7 Ep23) [AD,S]
The Status Quo Combustion: With potential changes affecting different aspects of his personal and professional life, Sheldon is forced to confront an uncertain future. (S7 Ep24) [AD,S]
The Proton Transmogrification: Sheldon struggles to process his feelings of grief when his idol Professor Proton passes away. The gang gather to celebrate Star Wars Day. (S7 Ep22) [AD,S]
The Gorilla Dissolution: Penny re-evaluates her life, including taking a big step with Leonard, while Howard and Bernadette struggle to look after Mrs Wolowitz. (S7 Ep23) [AD,S]
The Status Quo Combustion: With potential changes affecting different aspects of his personal and professional life, Sheldon is forced to confront an uncertain future. (S7 Ep24) [AD,S]
The Anxiety Optimization: When Sheldon gets stuck in a rut with his research, he asks his friends to cure his mental block by raising his stress levels. (S8 Ep13) [AD,S]
The Troll Manifestation: Leonard and Sheldon co-publish a physics paper but are forced to defend themselves against negative comments from an online critic. (S8 Ep14) [AD,S]
The Comic Book Store Regeneration: The gang prepare for the reopening of Stuart's comic book shop. Penny teaches Sheldon to 'let it go' when he is irritated. (S8 Ep15) [AD,S]
The Anxiety Optimization: When Sheldon gets stuck in a rut with his research, he asks his friends to cure his mental block by raising his stress levels. (S8 Ep13) [AD,S]
The Troll Manifestation: Leonard and Sheldon co-publish a physics paper but are forced to defend themselves against negative comments from an online critic. (S8 Ep14) [AD,S]
The Grasshopper Experiment: Raj panics when his parents arrange a blind date for him. But he discovers that he can talk to her - after a few drinks. (S1 Ep8) [AD,S]
The Comic Book Store Regeneration: The gang prepare for the reopening of Stuart's comic book shop. Penny teaches Sheldon to 'let it go' when he is irritated. (S8 Ep15) [AD,S]
The Cooper-Hofstadter Polarization: Sheldon and Leonard fall out when they're asked to collaborate at a physics conference. Penny tries to help but just makes things worse. (S1 Ep9) [AD,S]
The Tenant Disassociation: Leonard competes with Sheldon to become president of the tenants' association. Howard and Raj find a drone in the back garden. (S11 Ep19) [AD,S]
The Reclusive Potential: A brilliant scientist invites Sheldon to his isolated cabin, and Leonard, Raj and Howard go along for the trip. (S11 Ep20) [AD,S]
The Tenant Disassociation: Leonard competes with Sheldon to become president of the tenants' association. Howard and Raj find a drone in the back garden. (S11 Ep19) [AD,S]
The Reclusive Potential: A brilliant scientist invites Sheldon to his isolated cabin, and Leonard, Raj and Howard go along for the trip. (S11 Ep20) [AD,S]
The Locomotion Interruption: Leonard and Amy take an impromptu road trip to Arizona to pick up Sheldon when his epic railway journey ends in chaos. Penny has an interview. (S8 Ep1) [AD,S]
The Junior Professor Solution: When Sheldon has to teach a course at the university, Howard enrols in his class. Tension brews between Penny and Bernadette. (S8 Ep2) [AD,S]
The First Pitch Insufficiency: Howard's nervous when NASA ask him to throw the first pitch at a baseball game. Sheldon claims his and Amy's relationship is the best in the gang. (S8 Ep3) [AD,S]
The Locomotion Interruption: Leonard and Amy take an impromptu road trip to Arizona to pick up Sheldon when his epic railway journey ends in chaos. Penny has an interview. (S8 Ep1) [AD,S]
The Junior Professor Solution: When Sheldon has to teach a course at the university, Howard enrols in his class. Tension brews between Penny and Bernadette. (S8 Ep2) [AD,S]
The First Pitch Insufficiency: Howard's nervous when NASA ask him to throw the first pitch at a baseball game. Sheldon claims his and Amy's relationship is the best in the gang. (S8 Ep3) [AD,S]
The Intimacy Acceleration: When the gang hear about an experiment designed to make participants fall in love, Sheldon and Penny put it to the test as a joke. (S8 Ep16) [AD,S]
The Colonization Application: Amy learns that Sheldon has applied to take part in a one-way mission to colonise Mars. Leonard surprises Penny with a gift. (S8 Ep17) [AD,S]
The Leftover Thermalization: A power cut at Mrs Wolowitz's house defrosts the last meal she prepared before her death, so the gang consume it in her honour. (S8 Ep18) [AD,S]
The Intimacy Acceleration: When the gang hear about an experiment designed to make participants fall in love, Sheldon and Penny put it to the test as a joke. (S8 Ep16) [AD,S]
The Colonization Application: Amy learns that Sheldon has applied to take part in a one-way mission to colonise Mars. Leonard surprises Penny with a gift. (S8 Ep17) [AD,S]
The Loobenfeld Decay: Leonard and Sheldon each tell a lie to avoid going to see Penny singing on stage in a production of Rent, but Sheldon's fib gets out of control. (S1 Ep10) [AD,S]
The Leftover Thermalization: A power cut at Mrs Wolowitz's house defrosts the last meal she prepared before her death, so the gang consume it in her honour. (S8 Ep18) [AD,S]
The Pancake Batter Anomaly: Penny volunteers to nurse Sheldon when he's sick. But his friends, who know how miserable he is when he's ill, stay well away. (S1 Ep11) [AD,S]
The Comet Polarization: Sheldon isn't pleased by the comic book shop's new-found popularity. Raj tries to take the credit for Penny's astronomical discovery. (S11 Ep21) [AD,S]
The Monetary Insufficiency: Sheldon goes to Las Vegas to try to win money for science. Penny and Bernadette take Amy shopping for a wedding dress. (S11 Ep22) [AD,S]
The Comet Polarization: Sheldon isn't pleased by the comic book shop's new-found popularity. Raj tries to take the credit for Penny's astronomical discovery. (S11 Ep21) [AD,S]
The Monetary Insufficiency: Sheldon goes to Las Vegas to try to win money for science. Penny and Bernadette take Amy shopping for a wedding dress. (S11 Ep22) [AD,S]
The Hook-Up Reverberation: Raj's honesty about his past comes back to haunt him when his girlfriend Emily gives Penny the cold shoulder. The guys consider an investment. (S8 Ep4) [AD,S]
The Focus Attenuation: The guys attempt to invent something of scientific importance but only come up with new and enjoyable ways to procrastinate. (S8 Ep5) [AD,S]
The Expedition Approximation: Sheldon and Raj try to find out if they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a tunnel. (S8 Ep6) [AD,S]
The Hook-Up Reverberation: Raj's honesty about his past comes back to haunt him when his girlfriend Emily gives Penny the cold shoulder. The guys consider an investment. (S8 Ep4) [AD,S]
The Focus Attenuation: The guys attempt to invent something of scientific importance but only come up with new and enjoyable ways to procrastinate. (S8 Ep5) [AD,S]
The Expedition Approximation: Sheldon and Raj try to find out if they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a tunnel. (S8 Ep6) [AD,S]
The Skywalker Incursion: When Leonard and Sheldon are invited to speak at Berkeley, they take a detour during the journey to try to meet one of their idols. (S8 Ep19) [AD,S]
The Fortification Implementation: When Sheldon and Amy build a blanket fort, they come to a major crossroads in their relationship. Howard meets his half-brother. (S8 Ep20) [AD,S]
The Communication Deterioration: Raj is asked to create a message for NASA to use if one of their missions finds alien life. Penny considers taking up acting again. (S8 Ep21) [AD,S]
The Skywalker Incursion: When Leonard and Sheldon are invited to speak at Berkeley, they take a detour during the journey to try to meet one of their idols. (S8 Ep19) [AD,S]
The Fortification Implementation: When Sheldon and Amy build a blanket fort, they come to a major crossroads in their relationship. Howard meets his half-brother. (S8 Ep20) [AD,S]
The Communication Deterioration: Raj is asked to create a message for NASA to use if one of their missions finds alien life. Penny considers taking up acting again. (S8 Ep21) [AD,S]
The Sibling Realignment: When Sheldon finds out that his mum won't come to his wedding unless he invites his brother Georgie, he and Leonard head to Texas. (S11 Ep23) [AD,S]
The Bow Tie Asymmetry: Everyone is focused on making sure that the arrangements for Amy and Sheldon's big day go according to plan - except the bride and groom. (S11 Ep24) [AD,S]
The Sibling Realignment: When Sheldon finds out that his mum won't come to his wedding unless he invites his brother Georgie, he and Leonard head to Texas. (S11 Ep23) [AD,S]
The Monetary Insufficiency: Sheldon goes to Las Vegas to try to win money for science. Penny and Bernadette take Amy shopping for a wedding dress. (S11 Ep22) [AD,S]
The Comet Polarization: Sheldon isn't pleased by the comic book shop's new-found popularity. Raj tries to take the credit for Penny's astronomical discovery. (S11 Ep21) [AD,S]
The Reclusive Potential: A brilliant scientist invites Sheldon to his isolated cabin, and Leonard, Raj and Howard go along for the trip. (S11 Ep20) [AD,S]
The Tenant Disassociation: Leonard competes with Sheldon to become president of the tenants' association. Howard and Raj find a drone in the back garden. (S11 Ep19) [AD,S]
The Novelization Correlation: Amy appears on the Professor Proton show. Penny hates the idea that the female protagonist in Leonard's novel is based on her. (S11 Ep15) [AD,S]
The Table Polarization: Leonard buys a dining table for the flat but Sheldon objects to such a big change inside his home. Meanwhile, Howard gets the chance to return to space. (S7 Ep16) [AD,S]
The Separation Triangulation: Raj gets into a domestic drama with his new date Nell and her estranged husband. Sheldon rents his old room back from Leonard. (S11 Ep14) [AD,S]
The Solo Oscillation: Amy and Leonard bond over some experiments. Bert replaces Howard in his band. Penny gives Sheldon unexpected scientific inspiration. (S11 Ep13) [AD,S]
The Expedition Approximation: Sheldon and Raj try to find out if they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a tunnel. (S8 Ep6) [AD,S]
The Focus Attenuation: The guys attempt to invent something of scientific importance but only come up with new and enjoyable ways to procrastinate. (S8 Ep5) [AD,S]
The Hook-Up Reverberation: Raj's honesty about his past comes back to haunt him when his girlfriend Emily gives Penny the cold shoulder. The guys consider an investment. (S8 Ep4) [AD,S]
The Locomotive Manipulation: Love is in the air when Amy convinces Sheldon to join her for a romantic train trip to Napa Valley to celebrate Valentine's Day. (S7 Ep15) [AD,S]
The Convention Conundrum: After the guys miss out on Comic-Con tickets, Sheldon decides to hold his own comic book convention. The girls take tea at a swanky hotel. (S7 Ep14) [AD,S]
The Occupation Recalibration: Penny quits her job at the restaurant to pursue her acting career full-time. Bernadette accidentally destroys one of Howard's comics. (S7 Ep13) [AD,S]
The Matrimonial Metric: Sheldon and Amy secretly test their friends, to work out who should be best man and maid of honour at their wedding. (S11 Ep12) [AD,S]
The Celebration Reverberation: Sheldon and Howard plan birthday celebrations for Amy and Halley. Leonard is stressed by a Christmas letter from his brother. (S11 Ep11) [AD,S]
The First Pitch Insufficiency: Howard's nervous when NASA ask him to throw the first pitch at a baseball game. Sheldon claims his and Amy's relationship is the best in the gang. (S8 Ep3) [AD,S]
The Junior Professor Solution: When Sheldon has to teach a course at the university, Howard enrols in his class. Tension brews between Penny and Bernadette. (S8 Ep2) [AD,S]
The Locomotion Interruption: Leonard and Amy take an impromptu road trip to Arizona to pick up Sheldon when his epic railway journey ends in chaos. Penny has an interview. (S8 Ep1) [AD,S]
The Hesitation Ramification: Penny's big TV acting break hits the cutting-room floor, so Leonard does his best to comfort her, which leads her to ask him a bold question. (S7 Ep12) [AD,S]
The Cooper Extraction: Sheldon has to go back to Texas when his sister goes into labour. While he's away, the gang gather at the flat to decorate the Christmas tree. (S7 Ep11) [AD,S]
The Discovery Dissipation: Sheldon feels guilty when he gets attention for his accidental discovery of a new element. Raj stays with Howard and Bernadette for a week. (S7 Ep10) [AD,S]
The Bitcoin Entanglement: Sheldon seeks revenge when the guys cut him out of a potentially valuable investment. A secret about Leonard and Penny is revealed. (S11 Ep9) [AD,S]
The Status Quo Combustion: With potential changes affecting different aspects of his personal and professional life, Sheldon is forced to confront an uncertain future. (S7 Ep24) [AD,S]
The Gorilla Dissolution: Penny re-evaluates her life, including taking a big step with Leonard, while Howard and Bernadette struggle to look after Mrs Wolowitz. (S7 Ep23) [AD,S]
The Proton Transmogrification: Sheldon struggles to process his feelings of grief when his idol Professor Proton passes away. The gang gather to celebrate Star Wars Day. (S7 Ep22) [AD,S]
The Thanksgiving Decoupling: Howard takes the gang to his mother's house for Thanksgiving to protect himself from his grumpy father-in-law who has also been invited. (S7 Ep9) [AD,S]
The Itchy Brain Simulation: Leonard worries that Sheldon will overreact when he confesses that he failed to return a DVD to the rental shop seven years earlier. (S7 Ep8) [AD,S]
The Proton Displacement: Sheldon is jealous when Professor Proton asks Leonard to read his latest publication, so he befriends a TV personality from a rival science show. (S7 Ep7) [AD,S]
The Gates Excitation: The guys do everything in their power to meet Bill Gates when his firm has dealings with the pharmaceutical company Penny works for. (S11 Ep18) [AD,S]
The Athenaeum Allocation: Leonard jumps through hoops to secure the perfect wedding venue for Sheldon and Amy. Howard and Bernadette face a big decision. (S11 Ep17) [AD,S]
The Novelization Correlation: Amy appears on the Professor Proton show. Penny hates the idea that the female protagonist in Leonard's novel is based on her. (S11 Ep15) [AD,S]
The Separation Triangulation: Raj gets into a domestic drama with his new date Nell and her estranged husband. Sheldon rents his old room back from Leonard. (S11 Ep14) [AD,S]
The Solo Oscillation: Amy and Leonard bond over some experiments. Bert replaces Howard in his band. Penny gives Sheldon unexpected scientific inspiration. (S11 Ep13) [AD,S]
The Matrimonial Metric: Sheldon and Amy secretly test their friends, to work out who should be best man and maid of honour at their wedding. (S11 Ep12) [AD,S]
The Celebration Reverberation: Sheldon and Howard plan birthday celebrations for Amy and Halley. Leonard is stressed by a Christmas letter from his brother. (S11 Ep11) [AD,S]
The Bitcoin Entanglement: Sheldon seeks revenge when the guys cut him out of a potentially valuable investment. A secret about Leonard and Penny is revealed. (S11 Ep9) [AD,S]
The Tesla Recoil: Leonard and Howard learn that Sheldon went to work with the military behind their backs. Bernadette thinks Ruchi's trying to steal her job. (S11 Ep8) [AD,S]
The Geology Methodology: Sheldon and Bert collaborate on a research project, but Sheldon feels embarrassed to be associated with the study of geology. (S11 Ep7) [AD,S]
The Anything Can Happen Recurrence: Penny and Leonard distract Sheldon from his career problems by reinstating Anything Can Happen Thursday. Raj asks for Howard's advice. (S7 Ep21) [AD,S]
The Relationship Diremption: Sheldon wonders whether he's wasting his time with his study of string theory. Raj and Emily go on a double date with Howard and Bernadette. (S7 Ep20) [AD,S]
The Indecision Amalgamation: Raj has a dating dilemma. Penny can't decide whether to accept a role in a terrible film. Sheldon chooses between two gaming systems. (S7 Ep19) [AD,S]
The Romance Resonance: Sheldon is mortified when he stumbles upon an important scientific breakthrough by accident. Howard makes a romantic gesture to Bernadette. (S7 Ep6) [AD,S]
The Workplace Proximity: Amy tells Sheldon she's been asked to work on a project at his university, but the guys insist that it will be bad for their relationship. (S7 Ep5) [AD,S]
The Raiders Minimization: Amy ruins one of Sheldon's favourite films by pointing out a flaw in the storyline. Raj and Stuart decide to create online dating profiles. (S7 Ep4) [AD,S]