The Big Bang Theory
The Big Bang Theory is a TV show on E4. Astronomically popular US sitcom. Nerdy flatmates Leonard and Sheldon know a lot about physics, but little about women. But when Penny moves in across the hall, that could all be about to change... The program has been available since 2025. A total of 279 episodes have been broadcast, most recently in December 2025.
Last episode
25:00
25:00The Big Bang Theory
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)
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30:00The 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)
Series 3
30:00
30:00The Lunar Excitation: Raj registers Sheldon for online dating and finds the perfect match: the female version of Sheldon. Penny seduces Leonard while she's drunk. (S3 Ep23)
30:00The Staircase Implementation: Leonard tells Penny about how he and Sheldon became friends, and the origins of the roommate agreement. (S3 Ep22)
30:00The Plimpton Stimulation: When Sheldon meets a famous physicist online, he invites her over to the apartment, where she spends her time flirting with Leonard. (S3 Ep21)
30:00The Spaghetti Catalyst: Sheldon hides his friendship with Penny from Leonard, but it isn't long before his double life is exposed. Can he remain friends with both of them? (S3 Ep20)
30:00The Wheaton Recurrence: Leonard tells Penny that he loves her. The gang go bowling and find that Sheldon's enemy, Wil Wheaton, is playing in the opposing team. (S3 Ep19)
30:00The Pants Alternative: Sheldon is awarded a prestigious prize but is scared of collecting the award at a ceremony because he knows he'll have to make a speech. (S3 Ep18)
30:00The Precious Fragmentation: The gang squabble over a ring that they believe was used in The Lord of the Rings movies, and Sheldon seems to be turning into Gollum. (S3 Ep17)
30:00The Excelsior Acquisition: Sheldon is summoned to court for driving through a red light. He misses the chance to meet Stan Lee and riles the judge. Will he go to prison? (S3 Ep16)
30:00The Large Hadron Collision: Sheldon is gutted when Leonard asks Penny to go to Switzerland on Valentine's Day to see the world's largest particle accelerator instead of him. (S3 Ep15)
30:00The Einstein Approximation: Sheldon is baffled by a formula he's working on, so he gets a less mentally taxing job at the Cheesecake Factory to kick-start his creativity. (S3 Ep14)
30:00The Bozeman Reaction: After Leonard and Sheldon's flat is burgled, the gang create a new state-of-the-art security system to outwit any thieves and protect the place. (S3 Ep13)
30:00The Psychic Vortex: Sheldon and Raj go to a university party where Raj lusts after a girl called Abby. Leonard regrets telling Penny that he disapproves of her belief in psychics. (S3 Ep12)
30:00The Maternal Congruence: Leonard is horrified when his mother turns up unannounced for a Christmas visit, and then he finds out that Sheldon knew about her divorce before him. (S3 Ep11)
Series 7 25:00
25:00The Mommy Observation: Sheldon pays a surprise visit to his mother in Houston and is forced to confront a new reality. Raj throws a murder mystery-themed dinner party. (S7 Ep18)
30:00The Friendship Turbulence: In an attempt to improve their strained friendship, Howard invites Sheldon to visit NASA with him. Penny is upset when her car breaks down. (S7 Ep17)
Series 3 30:00
30:00The Gorilla Experiment: Howard and Penny are both jealous when Bernadette becomes fascinated with Leonard's physics project. (S3 Ep10)
30:00The Vengeance Formulation: Howard is scared about committing to Bernadette, so he avoids her. Then he realises that he's made a mistake and, to compensate, he proposes to her. (S3 Ep9)
30:00The Adhesive Duck Deficiency: Leonard, Raj and Howard go on a camping trip that alters their minds. Penny dislocates her shoulder when she slips in the shower. (S3 Ep8)