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
30:00
30:00The Big Bang Theory
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)
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30:00The 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)
Series 5
30:00
30:00The Hawking Excitation: When Stephen Hawking comes to lecture at the university, Howard is given the task of maintaining his wheelchair, which makes Sheldon envious. (S5 Ep21)
30:00The Transporter Malfunction: Penny buys Leonard and Sheldon some Star Trek memorabilia, but she is irked when they refuse to remove the toys from their packaging. (S5 Ep20)
30:00The Weekend Vortex: Amy is upset when Sheldon breaks his promise to attend her aunt's birthday party in order to join the guys for a Star Wars video game marathon instead. (S5 Ep19)
30:00The Werewolf Transformation: Sheldon's well-organised world is turned upside down when he learns that the barber who has cut his hair for years is ill in hospital. (S5 Ep18)
Series 2 30:00
30:00The Vegas Renormalization: Leonard and Raj take a heartbroken Howard to Las Vegas, leaving Sheldon locked out of his flat and forced to stay with Penny. (S2 Ep21)
30:00The Hofstadter Isotope: Leonard is devastated when Stuart from the comic book shop chats up Penny. Even worse, she doesn't mind. Sheldon tries to scupper the budding romance. (S2 Ep20)
30:00The Dead Hooker Juxtaposition: Penny develops a rivalry with a sexy female neighbour who moves into the apartment building and threatens to become the 'new Penny'. (S2 Ep19)
30:00The Work Song Nanocluster: Penny's home-based business selling hair accessories gets out of hand when an overexcited Sheldon takes charge of production. (S2 Ep18)
Series 7 25:00
25:00The 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)
35:00The 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)
Series 5 30:00
30:00The Rothman Disintegration: Sheldon and Kripke argue over who should get Professor Rothman's vacant corner office. Amy buys Penny some art to celebrate their friendship. (S5 Ep17)
30:00The Vacation Solution: Sheldon helps Amy in her biology lab after he is forced to use up two weeks of holiday, but he is bored by the tasks that she gives him. (S5 Ep16)
30:00The Friendship Contraction: After Sheldon keeps him awake all night, an irate Leonard decides he needs to break the roommate agreement, which formally ends their friendship. (S5 Ep15)
30:00The Beta Test Initiation: Leonard and Penny put their relationship through a 'beta test' and report problems with each other as 'bugs'. Sheldon and Amy seek internet fame. (S5 Ep14)
Series 2 30:00
30:00The Terminator Decoupling: Leonard, Sheldon, Howard and Raj discover that beautiful sci-fi actress Summer Glau is on board their train to San Francisco. (S2 Ep17)
30:00The Cushion Saturation: A game of paintball leads to a squabble when Penny accidentally shoots paint at one of Sheldon's cushions. Romance blossoms between Howard and Leslie. (S2 Ep16)
30:00The Maternal Capacitance: A disastrous visit from Leonard's mother has the unexpected side-effect of bringing Leonard and Penny closer together. (S2 Ep15)
30:00The Financial Permeability: When Sheldon lends Penny some money, it brings her ex-boyfriend Kurt back into her life, with negative consequences for the gang. (S2 Ep14)