TV Guide TLC Saturday

Sheldon is uninterested in Amy's career, so Penny, Raj and Leonard try to make him understand that sometimes it benefits a relationship to pretend to care about a partner's achievements. Howard notices Bernadette is uncomfortable around children when she helps him perform a magic show at his nephew's birthday party

Leonard asks Penny out on a date, and they agree to give their relationship another chance. They soon remember why it did not work out in the first place, but end up sleeping together anyway. The 100th episode of the comedy, starring Johnny Galecki and Kaley Cuoco

Leonard and Penny continue testing their rekindled relationship using an innovative system to report discrepancies. Howard and Bernadette begin to worry when Raj starts treating his new phone like a person, while Sheldon and Amy try to achieve internet fame by creating a video podcast about flags

After a sleepless night, Leonard breaks his room-mate agreement with Sheldon. Howard makes preparations to go on a flight to the International Space Station and enlists Raj's help to ensure he gets a cool astronaut nickname

Sheldon uses his holidays to help Amy in her biology lab, but moans about the menial jobs he is given - until she asks him to dissect a brain. Penny grows curious about Leonard's attitude to marriage when Bernadette asks Howard to sign a pre-nuptial agreement

Leonard, Raj and Howard devise a contest to decide whether Sheldon or Kripke should get Professor Rothman's vacant corner office. Meanwhile, Penny receives the gift of a painting from Amy to celebrate their friendship, but discreetly tries to dispose of it with help from Bernadette

In 1987, lonely Californian teenager Charlie Watson is traumatised by the death of her father and resentful of her mother Sally's relationship with new boyfriend Ronald. For her 18th-birthday she's given a yellow Volkswagen Beetle, which turns out to be the battle-scarred Autobot Bumblebee. Transformers prequel, starring Hailee Steinfeld, John Cena and Jorge Lendeborg Jr

The shape-changing robots are driven into hiding when the human race turns against them. When rediscovered by a kindly inventor and his daughter, they come out of exile to save the world, battling a new breed of human-created Transformers. These deadly new machines were created to hunt them down, but are now growing independent and intend to make use of technology from the Transformers' home planet in a plot that could threaten all life on Earth. Fourth film in the sci-fi adventure series, starring Mark Wahlberg, Stanley Tucci and Kelsey Grammer

The prodigy uses his new friendship with school bully Tommy Clarkson to boss Georgie around. Missy steals Meemaw's make-up to wear when her photograph is taken on school picture day

The young genius and Dr Sturgis fall out for the first time when Dr Sturgis marks a question as wrong on Sheldon's test paper. Meanwhile, Mary takes over Pastor Jeff's duties when he's off sick