E4 Sunday

The walls close in on Mercedes as she races to get the money for her blackmailer, and Dillon and Rex try to support Ste as he struggles with his emotions

Leonard returns from his research expedition and undergoes an adjustment period with Sheldon, and Howard experiences an unusual emotional reaction

The friends compete in a scavenger hunt designed by Raj to test their scientific knowledge and life skills, but it brings out the best and worst in everyone

Amy spoils one of Sheldon's favourite films by pointing out a plot hole, and Leonard realises he can manipulate Penny into feeling sorry for him. Comedy.

Sheldon re-evaluates the time he spends with Amy when she takes a job at the university, and Howard is forced to sleep on his friend's sofa after an argument with Bernadette

Sheldon makes a major scientific breakthrough by accident, causing him to feel like a fraud, while Penny tries to be more romantic. Comedy, starring Jim Parsons

Sheldon is hurt when Professor Proton contacts Leonard for help, so he befriends TV scientist Bill Nye, and Raj gets jealous when Howard crashes a girls' night in making home-made jewellery. Guest starring Bob Newhart, with Jim Parso...

Leonard worries that Sheldon will overreact when his friend learns about a past indiscretion, while Penny confronts Raj's old flame Lucy

The group spends the Thanksgiving holiday at Mrs Wolowitz's house, and Penny deals with a mistake from her past. Comedy, starring Jim Parsons and Kaley Cuoco

Sheldon is bothered by the attention he receives following his heavy element discovery, but is taken aback when Leonard disproves his work

While Sheldon is at home in Texas, the rest of the friends decorate for Christmas and reflect on how much he has changed their lives. Comedy, starring Johnny Galecki

Penny's hopes of an acting break are dashed after her role in a TV show is cut, and she makes an important decision when Leonard tries to help her in the aftermath

Sheldon and Penny end up spending time together when he is forced to take a holiday. Meanwhile, Bernadette seeks Stuart's help. Comedy, starring Johnny Galecki

The guys are unable to get tickets for Comic-Con, so Leonard, Howard and Raj buy fake passes from a stranger, but worry about getting caught with them

Sheldon and Amy take a train ride to the Napa Valley with Howard and Bernadette on Valentine's Day. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

Howard is offered the chance to go back to the International Space Station, while Leonard's purchase of a dining-room table causes Sheldon to re-evaluate his life

Howard takes Sheldon to Nasa's headquarters, Penny has second thoughts about quitting her job as a waitress when her car dies, and Amy tries to find Raj a date

Sheldon receives a nasty surprise when he visits his mother in Houston, while Raj's murder mystery party causes conflict for the rest of the gang

Raj is racked with guilt when he tries to date Lucy and Emily at the same time, while Penny has trouble deciding whether to take a role in a film

Sheldon starts to wonder whether he is wasting his time studying string theory, and Raj finds out that Howard once embarrassed himself on a date with Emily

Penny and Leonard try to distract Sheldon from his career woes by reinstating Anything Can Happen Thursday, and Raj prepares for a date with Emily

The friends are saddened by the news that Professor Proton has died - just as they are making their final preparations for Star Wars Day. Bob Newark guest stars

Raj receives advice from Sheldon after he sees Emily on a date with another man, while Penny gets fired from the movie, prompting her to take a serious look at her life

Sheldon becomes upset about his career, the destruction of the comic-book store and Leonard and Penny's future living arrangements

Morocco v Comoros (Kick-off 7.00pm). Coverage of the Group A match at Prince Moulay Abdellah Stadium in Rabat, Morocco

Simon tries to impress a girl by going to a gig, but Will, Jay and Neil tag along and jeopardise his chances. Comedy, starring Joe Thomas and Simon Bird

Simon's principles are put to the test when his new girlfriend says she will kiss him only if he lets her redesign his wardrobe, and Will considers spending time with a boring date

A couple decide to adopt, but get more than they bargained for when they take in a rebellious teen and her two siblings. Comedy, starring Mark Wahlberg and Rose Byrne

The daredevils return for another round of wildly absurd and often dangerous stunts, with help from a new cast of stuntmen and women. Comedy, starring Johnny Knoxville

Famous faces give their opinions on Britain's Got Talent, Alan Carr's Epic Gameshow, Ramsay's 24 Hours To Hell and Back, Ambulance and BBC Breakfast with Take That

Sheldon and Penny bond as they miss Leonard, while Bernadette and Amy visit an out-of-town conference and prove popular at the hotel bar

Leonard returns from his research expedition and undergoes an adjustment period with Sheldon, and Howard experiences an unusual emotional reaction

The walls close in on Mercedes as she races to get the money for her blackmailer, and Dillon and Rex try to support Ste as he struggles with his emotions