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 July 2025.
Last episode
30:00
30:00The Big Bang Theory
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)
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30:00The 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)
30:00The Solo Oscillation: Amy and Leonard bond over some experiments. Bert replaces Howard in his band. Penny gives Sheldon unexpected scientific inspiration. (S11 Ep13)
Series 3
30:00
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)
Series 11 30:00
30:00The 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)
30:00The Celebration Reverberation: Sheldon and Howard plan birthday celebrations for Amy and Halley. Leonard is stressed by a Christmas letter from his brother. (S11 Ep11)
30:00The Confidence Erosion: Sheldon and Amy try to use maths to make their wedding planning less stressful. Raj falls out with Howard. (S11 Ep10)
Series 3 30:00
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)
Series 11 30:00
30:00The 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)
30:00The 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)
30:00The Geology Methodology: Sheldon and Bert collaborate on a research project, but Sheldon feels embarrassed to be associated with the study of geology. (S11 Ep7)
Series 3 30:00
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 he disapproves of her belief in psychics. (S3 Ep12)
Series 11 30:00
30:00The Proton Regeneration: Sheldon goes head-to-head with Wil Wheaton as they compete for the role of the new Professor Proton when the TV series has a reboot. (S11 Ep6)
30:00The Collaboration Contamination: Sheldon and Raj ask Bernadette for advice about their jealousy when Amy and Howard decide to collaborate on a new project. (S11 Ep5)
30:00The Explosion Implosion: Howard and Sheldon bond on a trip to the desert to launch a model rocket. Leonard is annoyed when his mother befriends Penny. (S11 Ep4)
Series 3 30:00
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)
30:00The Gorilla Experiment: Howard and Penny are both jealous when Bernadette becomes fascinated with Leonard's physics project. (S3 Ep10)