E4 +1 Today

Sheldon tries to extend his lifespan, concerned he will not be around long enough for his consciousness to be downloaded into a robot body. Guest starring Steve Wozniak

Sheldon searches for an alternative to human companionship following his break-up with Amy, and things take a turn for the worse when he starts buying pet cats in bulk

Hayley wants to give the family a Christmas gift they will never forget, while Jay, Gloria and Joe have to deal with some unwelcome visitors over the festive season

Claire and Phil are not convinced Haley and Dylan can cope on their own, while Pameron has a bone to pick with Mitchell when she gets out of prison

Comedy clips showcasing amusing internet videos on the themes of food and animals

Penny worries about the consequences of spending the night with Raj, and Sheldon takes command of the paintball team

Amy is caught in a battle of wills between Sheldon and Penny, while Leonard tries to reignite his long-distance relationship with Priya, who has moved back to India

Leonard accompanies Amy to a colleague's wedding, and Howard tries to persuade Bernadette they should live with his mother after getting married

Raj feels upset about not being in a relationship, so Penny sets out to find a date and introduces him to a girl he can actually talk to

Sheldon's old adversary Wil Wheaton returns and invites everyone to a house-warming party. Leonard is eager to go, but Sheldon threatens to shun him if he attends

Sheldon's mother comes to visit and woos the gang, but he cannot help feeling jealous of all the attention she is receiving. Comedy, starring Jim Parsons

Leonard kisses a girl he meets in the comic-book store, while the gang celebrates Halloween by playing pranks on Sheldon. Comedy, starring Johnny Galecki and Jim Parsons

Amy is hurt to discover Penny and Bernadette went shopping for bridesmaid dresses without her and turns to a reluctant Sheldon for comfort. Comedy, starring Mayim Bialik

Leonard and Penny endure an awkward night at the cinema, both insisting the outing is not a date. Meanwhile, Sheldon is forced to face his fear of birds

Comic-book store owner Stuart asks Amy out on a date, forcing a jealous Sheldon to consider the future of his relationship with her

Leonard confronts the man who tormented him in high school, while Penny realises she did her fair share of bullying in the past

Sheldon is encouraged to feign interest in Amy's career accomplishments for the sake of their relationship, and Howard notices Bernadette is uncomfortable around children

Leonard and Penny try to give their relationship another chance, but soon remember why it did not work out in the first place. With Johnny Galecki and Kaley Cuoco

Leonard and Penny continue testing their rekindled relationship, and Raj starts treating his new phone like a person, while Sheldon and Amy try to achieve internet fame

Leonard breaks his room-mate agreement with Sheldon, while Howard prepares for a flight to the International Space Station, and tries to ensure he gets a cool astronaut nickname

Sheldon uses his holidays to help Amy in her biology lab, but soon moans about the menial jobs he is given, and Bernadette asks Howard to sign a pre-nuptial agreement

Sheldon and Kripke battle it out to get Professor Rothman's vacant corner office, while Penny discreetly tries to dispose of a present Amy gave her as a token of esteem

Sheldon refuses to get his hair cut as his regular barber is in a coma - a solitary change that causes chaos in the rest of his well-ordered life

Amy is disappointed when Sheldon favours a video-game marathon with the boys over accompanying her to a birthday party. Comedy, starring Mayim Bialik and Jim Parsons

Penny buys Leonard and Sheldon some Star Trek action figures, but the duo refuse to remove them from the packaging. Raj asks his parents to set up a date for him

Howard is put in charge of looking after Stephen Hawking's wheelchair and takes advantage of his position to blackmail Sheldon into performing unpleasant tasks

Leonard, Sheldon and Raj organise a stag party for Howard, but stories about his sexual history are unwittingly revealed. Comedy, starring Simon Helberg and Kunal Nayyar

Howard tries to use his wedding as an excuse to avoid being sent into space but ends up accepting the mission, while Leonard accidentally asks Penny to marry him

Howard awaits the shuttle launch and reflects on the events of the previous few days, when he and Bernadette tried to get married before he went into space

Marge breaks her leg in a skiing accident and has to recover in hospital - so Lisa volunteers to take over as head of the household until she is well again

Homer is asked to help the Rolling Stones at a benefit gig, filling his head with dreams of stardom. Featuring the voices of Mick Jagger, Keith Richards and Lenny Kravitz

Carol Vorderman, Kelly Brook, Rob Rinder and Mo Gilligan take part in the culinary challenge, and prepare a showstopper based on their favourite guilty pleasure

Jimmy Carr presents another compilation, featuring clips of appearances by Michael McIntyre, Davina McCall, Lee Mack, Romesh Ranganathan, Roisin Conaty and Kevin Bridges

The final three couples must prove they have the strongest connection, to be crowned winners and claim £50,000. Reality dating show hosted by Rylan Clark

A twice-divorced woman from Northampton is in search of husband number three, while a man who has Crohn's disease hopes to regain some body confidence

Sheldon's epic railway journey ends in chaos, forcing Leonard and Amy to travel to Arizona to pick him up. Meanwhile, Penny has a job interview

Sheldon teaches a course at the university, and Howard surprises the gang when he chooses to enrol on it. Comedy, guest starring Regina King

Reviews of The Celebrity Traitors, Trigger Point, Michael McIntyre's The Wheel, The Great British Bake Off, Love Is Blind, DIY SOS and BBC News (clocks)

When Adam takes Beverly to her high-school reunion, he tries to prevent a reality where she winds up with the wrong man

Luke and Manny are left on babysitting duties when the rest of family go out, but when the fire alarm goes off and Claire suspects the boys are throwing a party

Cameron and Mitchell's friends mistakenly assume they have split up, while Haley attempts to cook Thanksgiving dinner as a thank you for Claire and Phil's support with the twins

Jay is jealous when a lifesize advert featuring Gloria starts attracting unsavoury attention from other men, while Cam and Mitch's new tenants start acting strangely

Everyone heads to Jay and Gloria's when a huge storm causes a power cut, although so many people in such close quarters can only spell trouble

Penny worries about the consequences of spending the night with Raj, and Sheldon takes command of the paintball team

Amy is caught in a battle of wills between Sheldon and Penny, while Leonard tries to reignite his long-distance relationship with Priya, who has moved back to India