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The gang goes on the infamous sociology and geography field trip to Swanage, and Will takes a shine to new girl Lauren - but she is only interested in Simon

Will is unhappy about being forced to take a work experience job at a garage due to a mix-up that sees Neil joining a newspaper. Simon Bird and Blake Harrison star

Will plans to celebrate his birthday with a grown-up dinner, but the event clashes with a more popular party - so the gang gatecrashes the rival gathering

Will tries to reinvent the boys' image by taking them clubbing around London, but his efforts to make the friends appear cool are hampered by aggressive bouncers and a tramp

Will helps co-ordinate the school's Duke of Edinburgh award scheme, and turns the situation to his advantage by trying to flirt with a university student. Simon Bird stars

The friends prepare for their exams. Simon makes progress with Carli by helping her revise, and the gang members get together to reminisce about the past year

Phil and Claire take Haley and Dylan to dinner to reassure them they are not bad parents. While out they run into Mitch and Cam, who are chaperoning Lily's first date

Claire struggles to find the right moment to sack an employee, and Phil catches Luke in a compromising position

All three families dealing with problems on their holidays, before trying to make their way back home in time for Father's Day

Marge tells Homer not to bother coming home after he gets a little too drunk at Moe's on Christmas Eve

Amy struggles to answer Sheldon's marriage proposal. Howard and Bernadette receive unexpected news. Stephen Hawking and Laurie Metcalf guest star

Bart goes missing and the people of Springfield launch a search party to find him. The townsfolk almost give up hope, until Sideshow Bob steps in

After a failed Black Friday shopping spree, Marge is determined to fix Christmas, but Homer and the kids surprise Marge with a holiday at a Florida resort

Amy and Sheldon go on honeymoon, but do not get very far. Penny and Leonard discover they are uncomfortably similar to Amy's parents

Sheldon and Amy are baffled by Leonard and Penny's wedding gift but are too embarrassed to ask them what the item actually is. Stuart asks Denise out on a date

Howard and Bernadette's life get complicated when Stuart starts bringing his new girlfriend home. Penny and Leonard talk about starting a family, and Raj explores arranged marriage

The gang are surprised to learn Sheldon has a best friend he has never mentioned before - and he is due to pay a visit. Bernadette and Penny get to know Raj's fiancee better

Raj does not want Howard to join him in hosting a show at the planetarium. Sheldon goes to great lengths to ensure Amy is free to help him work on a project

Sheldon seeks revenge on Howard when his colleague dresses up as him for Halloween. Leonard is shocked that Penny does not remember their first kiss

Leonard faces a dilemma when he is made responsible for distributing extra grant money. Bernadette turns the backyard playhouse into a hideaway from her husband and children

Sheldon tries to bond with Amy's father but when Howard lures Mr Fowler away with magic, Sheldon has to spend time with his mother-in-law instead. Kathy Bates and Teller guest star

Sheldon and Amy are devastated after learning from a Russian paper that Super Asymmetry has already been discovered and disproved. Bernadette wants to beat Howard in a video game

Amy and Sheldon are still feeling down about their theory being disproven, until an old VHS tape from Sheldon's past inspires the couple not to give up

Penny and Leonard organise a paintball game, which results in mayhem when Sheldon becomes jealous of Amy. Raj catches Anu with her ex-boyfriend

Penny's ex-boyfriend Zack learns he is infertile, so he asks Leonard for help. Raj attempts to make things right with his ex-fiancee Anu

Sheldon and Amy are thrilled when their theory is proved correct by two physicists from Chicago. Bernadette experiences a big success at work

Sheldon is thrilled to help Bernadette and Howard in their fight against a neighbour's balcony. Leonard is disappointed when his friends are uninterested in his new laser

Penny tries to put a stop to Leonard's plan to be a sperm donor for her ex-boyfriend Zack's wife. Howard, Bernadette, Anu and Raj make the most of the latter's cancelled stag party

The friends find out Wil Wheaton is hosting a celebrity Dungeons and Dragons game with William Shatner and Kevin Smith - and will do anything to get the final seat at the table

Bernadette and Penny travel to San Diego for a pharmaceutical sales convention. Back home, Sheldon comes up with some novel games to play with the Wolowitz children

Sheldon and Amy try to charm the Nobel laureates, while Halley's fear of the dark leads to opportunity and conflict for Howard, Bernadette and Stuart

Amy has a meltdown when she feels the pressure of what it would mean for women everywhere if she were to win a Nobel Prize. Raj and Howard attempt to relive the good old days

Raj publishes a paper suggesting he has discovered alien life - but worries people will not take him seriously. Leonard wants to take charge of a plasma physics study

Sheldon and Amy face a dilemma when Barry reveals Dr Pemberton plagiarised his thesis back in college. Bernadette tells Howard another waitress used to have a crush on him

Leonard is pleasantly surprised when his mother Beverly arrives and is genuinely kind to him - until he finds out the real reason for her visit. Christine Baranski guest stars

Sheldon and Amy find themselves staying up all night as they await a telephone call that could bring big news from the Nobel Committee

In the last-ever episode, Howard and Bernadette go away on a trip without their children for the first time, while Leonard and Penny try to keep a secret

Homer and Bart transform a losing racehorse into a champion - much to the dismay of rival jockeys, who soon threaten revenge

Marge tells Homer not to bother coming home after he gets a little too drunk at Moe's on Christmas Eve

Bart goes missing and the people of Springfield launch a search party to find him. The townsfolk almost give up hope, until Sideshow Bob steps in

After a failed Black Friday shopping spree, Marge is determined to fix Christmas, but Homer and the kids surprise Marge with a holiday at a Florida resort

The armchair critics review Christmas programming of 2024, including the Strictly Christmas Special, Gavin & Stacey: The Finale, and more

Simon is eager to participate in Carli's fashion show, and Will tries to shake off his embarrassing reputation. Comedy, starring Emily Head, Joe Thomas and Simon Bird