E4 Extra Saturday

Malcolm meets a chess-playing layabout who could be an older version of himself, and Lois cannot understand why she is putting on weight. Guest starring Jason Alexander

Part one of two. Lois goes into labour, coinciding with a less inspiring surprise in the form of a visit from Grandma Ida (Cloris Leachman)

Part two of two. Hal crashes the car when he hurries home to be with Lois during her labour. Starring Bryan Cranston and Jane Kaczmarek

Hal and Lois try to find suitable day care for the new arrival, and Francis takes advantage of recent UFO reports

Hal bets his life insurance policy in Las Vegas, while Lois sees her favourite singer at a show. Guest starring David Cassidy

Strains are put on Barney's relationships as the conflict between Robin and his mother Loretta escalates. Meanwhile, Ted and Cassie visit a lighthouse

Robin is upset to discover her mother cannot attend the wedding. Meanwhile, the gang recalls when Barney accepted a series of romantic challenges from Lily and Robin

Barney sees his parents together for the first time in years and becomes convinced they could become a couple again - but his brother has other ideas

Marshall tries to get Marvin to sleep, and devises three rhyming bedtime stories based on the gang's exploits. American sitcom, guest starring James Van Der Beek

Barney becomes convinced Robin is planning on throwing him a special wedding rehearsal dinner at the laser tag arena, while Ted tries to learn to play the piano

Groom-to-be Dele plans to make use of his £12,000 to arrange a soap-opera-themed wedding, but fiancee Tracy hopes he will end their 15-year engagement with a ceremony in a castle

Comic book-loving groom Anthony wants to prove he can be a real superhero to bride-to-be Lauren, by organising a comic-inspired wedding in a cave

The founder of one of America's most successful bakeries dons a disguise to go incognito among her employees, posing as a contestant on a reality show

Courtland Gray prepares to takeover as CEO of Peavey Electronics by donning a disguise to go incognito among the company's staff to learn how the frontline employees really feel

Todd Pedersen, CEO and founder of a solar and home security business based in Utah, goes undercover among his own workforce posing as a reality show contestant

Buffalo Wings & Rings president Nader Masadeh goes undercover to work in his own company to ensure his standards are being executed across the brand

The chef helps a failing Mexican restaurant in Philadelphia. Owners Greg and Mary bought the place because of its sentimental value, but the business now threatens their marriage

Gordon Ramsay travels to Fremont, California, in an attempt to save a failing restaurant that is tearing the owners' marriage apart

Raj's parents set him up on a blind date in the hope of initiating an arranged marriage, but the girl in question seems more interested in Sheldon

Leonard and Sheldon receive an invitation to present their research to a physics conference, but it causes conflict between them - and Penny's intervention makes matters worse

Sheldon and Leonard invent excuses to avoid going to watch Penny's performance in a musical, but maintaining the pretence makes matters ever more complicated

Sheldon falls ill and his friends stay well away, knowing he will be in a terrible mood, but an unsuspecting Penny offers to nurse him

Sheldon feels threatened by a 15-year-old physics prodigy who is even cleverer than he is, and asks Leonard to help him discredit the teenager's research

Leonard, Raj and Howard kick Sheldon off their quiz team, so he decides to prove his superiority by forming a rival squad of his own. Johnny Gale and Jim Parsons star

Penny makes fun of Leonard's habit of collecting sci-fi memorabilia, so he decides to give it up - but his friends try to stop him changing his ways

Sheldon's friends all fall for his sexy twin sister, who is paying him a visit - but he declares he will have the final say on who can date her

Penny plans to throw a surprise party for Leonard and enlists Sheldon to help with the arrangements, while Howard comes up with an elaborate plan to distract the birthday boy

Penny finally agrees to go out with Leonard and they both ask Sheldon for advice on how to handle the forthcoming date. Johnny Galecki stars

When funny and random characters start to appear at an alarming rate, Rick is left exhausted from having to deal with them

Morty does not know what he is getting into when he receives a gift from a random stranger on the street

After years of waiting, Morty hopes this is the year he finally gets a certain gift for Christmas, hoping that Rick finally caves in

Rick tries to help an old friend get back on his feet.