TV Guide E4 Saturday

Homer and Bart perform street magic in a bid to impress passers-by and raise enough cash to pay a mechanic's bill. Unfortunately, they quickly realise people are suckers for a sob story, and start conning the public for money. Featuring the guest voice of Edward Norton

Homer suffers a bout of incontinence and has to wear a nappy, forcing Marge to ask eccentric boffin Professor Frink to help determine the cause of his condition. With the use of a dream machine, Frink breaks into Homer's subconscious mind where a string of insecurities are exposed, including one involving his late mother

There's a death in Springfield, while Krusty's confidence takes a beating after he appears on a TV comedy roast with Sarah Silverman and Jeff Ross, prompting him to retire from the business. Lisa becomes worried for Homer's safety, so sets out to prevent him getting hurt

The youngster becomes inspired by his hero Albert Einstein and tries to play the violin. Mary thinks that she may be pregnant and goes to buy a pregnancy test with Meemaw

The young genius moves in with Dr Sturgis for a night to see what it would be like to leave home and go to college. During his absence, a lonely Mary tries to bond with other members of the family

When Mr Meller singles out Adam during dodgeball, Beverly intervenes and gets him fired. Soon after, Murray and Adam see Meller in a new light, so Beverly tries to get his job back for him. Meanwhile, Barry can't accept that Erica is better than him at a new board game - Trivial Pursuit

Beverly challenges Erica to participate in Jazzercise after she claims her mother's obsession is 'sad'. However, when she wins the bet, Erica opts out of celebrating Thanksgiving so Beverly has to find a way to win her daughter back to the celebrations. Uncle Marvin visits and unexpectedly bonds with Adam. Comedy, starring Wendi McLendon-Covey and Jeff Garlin

Sheldon and Amy take a train ride to the Napa Valley with Howard and Bernadette on Valentine's Day, while Leonard and Penny head to the vets when they volunteer to look after Raj's dog. Comedy, starring Johnny Galecki, Jim Parsons and Kaley Cuoco

Gordon Ramsay comes to the aid of a restaurant in Mount Sinai, New York, which appears to be stuck in the 1980s. The crumbling decor and unenthusiastic head chef at the Handlebar need to be tackled, but owners Bill and Carolyn LeRoy are in denial about the problems they face

The chef heads to Italian family restaurant Sabatiello's in Stamford, Connecticut, where the owner's fiery temper upsets the staff and has left him more than $1million in debt. Gordon's help is urgently needed to get customers back through the door, but the restaurateur does not take kindly to criticism and closes the restaurant down when his employees turn on him

The fiery chef comes to the aid of Anthony Trobiano, whose restaurant in Great Neck, New York, is failing even though his partner's parents have given him their life savings and he has taken out half a million dollars in loans. Gordon has some harsh criticism about the unhygienic kitchen and the quality of the food being served, but the owner has trouble accepting his advice

The owners of Jack's Waterfront at St Clair Shores in Michigan are keen to hear the fiery chef's advice for turning their failing seafood restaurant around. The lakeside location is a popular summer spot with fantastic views, but an uninspiring menu and a manager more skilled at socialising than organising are preventing them from achieving year-round success

Amy must decide whether or not to marry Sheldon and gives him an answer to his proposal. Howard and Bernadette struggle with some unexpected news. With guest stars Laurie Metcalf, Riki Lindhome and Stephen Hawking

Leonard angers the university - and the entire physics community - when he gives an embarrassing interview. Amy and Bernadette bond over having to hide their success from Sheldon and Howard. Ira Flatow and Regina King guest star

As Sheldon stresses out about picking a wedding date, Amy tries to convince him that he has a more laid-back side. Meanwhile, Raj and Stuart compete to win the heart of Bernadette's new colleague Ruchi. Swati Kapila guest stars

Alex is a 12-year-old lad who is starting a new term at school and trying to adapt to his new surroundings. While hiding from bullies in a construction site, he finds a mysterious sword and discovers it's King Arthur's Excalibur. Eventually Alex meets legendary wizard Merlin and faces up to a tense battle with the evil Morgana. Joe Cornish's fantasy action adventure, starring Louis Ashbourne Serkis, Rebecca Ferguson and Tom Taylor.

Homer wins a vintage motorcycle and forms his own gang - only to encounter trouble in the form of tough bikers the Hell's Satans, who kidnap Marge. Featuring the voices of John Goodman and Henry Winkler

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. Unfortunately, Bart and Homer prove so awkward and unhelpful that she is driven to desperate measures

A snowstorm leaves Bart, Lisa and their fellow students trapped inside Springfield Elementary and it is not long before the pupils are running amok. Homer and Ned Flanders are left to mount the rescue operation to save the kids - and Principal Skinner

Doctors discover Homer has had a crayon lodged in his brain since childhood and decide to remove it. The procedure instantly transforms him into a genius, but removes his ability to enjoy life

History student Abbie is a descendant of Henry VIII but is hoping to find someone much nicer than her horrible ancestor. Butler Kit wants to meet a man who shares his passion for the royal family, and will football-mad James get the royal seal of approval from Kate Middleton lookalike Jodie?

More singletons arrive at the restaurant in search of romance, including barber and football fanatic Matt, who is paired with fellow hairdresser Adele, and 23-year-old Max, who has a passion for linguistics but can never say the right thing when it comes to dating. Meanwhile, estate agent Leora is tired of being chatted up by cocky Chelsea boys and is in the market for a nice guy. Will Ben fit the bill?

The armchair critics give their instant reactions to the biggest and best shows shown over Christmas 2019, including Gavin & Stacey, Dracula, Strictly Come Dancing, Jamie's Easy Christmas Countdown, Celebrity Catchphrase, Home Alone, Top Gear Christmas Special, A Berry Royal Christmas, A Merry Tudor Christmas with Lucy Worsley, The Chase Celebrity Christmas Special, Jane and Friends: New Year's Eve Special and Gremlins