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Psychological sci-fi thriller. Sam Rockwell stars as a man who lives alone on the moon overseeing a mining operation. His time's nearly done, but he's started to go a bit peculiar..

Gordon Ramsay infiltrates struggling restaurants with the help of a secret insider. Will a much-needed reality check finally hit home for three sisters.

Joe Lycett and Phil Wang enjoy DC's wonders, from the Washington Monument to the Barbie Pond, a secret door experience, a donut tour and a gin rickey in a speakeasy.

Marge becomes a successful Tupperware salesperson and Lisa tries to do secret good deeds for people.

Homer falls for his beautiful new colleague Mindy Simmons (guest star Michelle Pfeiffer), who shares his love of doughnuts..

When Sideshow Bob is released from prison after sending Bart threatening letters, the Simpsons are moved to Terror Lake under the witness relocation programme.

The Boy Who Knew Too Much: Bart is witness when Mayor Quimby's nephew is falsely accused of assaulting a French butler. But to testify, he has to admit to skipping school..

In Berkshire, cultured Eveleen and former thespian Michael compete with Leanne and Ricci, who have a 22-year age gap between them, and history buff Paul and his fiancée Natasha.

Jon and Kay plan the next phase of refurbishing an old country pub, while Dannie and Grace decide to build a chicken coop for their rapidly increasing flock.

Another chance to catch Friday's new episode, with Nina Wadia in Dictionary Corner. Colin Murray, Rachel Riley and Susie Dent host.

Diane has a change of heart and rushes to tell Sam about her newly discovered feelings, but Sam has also had second thoughts and gone back to playing the field.

Cliff sets his mother up to marry a very rich man, but then his future stepfather announces that he's giving all his money to charity.

Frasier's excited to appear on a TV debate between psychiatrists - until he discovers that his opponent is a woman who he once dated: Dr Lilith Sternin.

Ray's horrified to learn that his mother used to read his diary, which contained his most personal - and perverted - thoughts.

After spending a Valentine's dinner without talking to each other, Ray and Debra agree to take an interest in each other's hobbies.

Ray isn't happy about the twins' roles in the school play.

When Martin continues his 20-year obsession with solving a murder, Frasier steps in with his own theory: that the killer was a monkey.

Fool Me Once, Shame on You, Fool Me Twice...: Frasier attempts to work his psychoanalysis on a self-confessed lazy criminal who's masquerading as the 'real' Frasier Crane.

..: Stunning pop psychologist Honey Snow (Shannon Tweed) makes quite an impression on Frasier, against his better judgement.

The Show Where Sam Shows Up: Sam breezes into town and updates Frasier on the lives of the Cheers gang. But it's soon apparent that he's on the run from a sex addict..

In Boston, Gordon Ramsay visits Davide, an Italian restaurant that's been run into the ground by brothers Frank and Anthony. Can they learn to trust each other again.

Channel 4's midday news summary.

Simon O'Brien and Henry Cole head to High Wycombe in Buckinghamshire, a town famed for furniture production - music to Simon's ears, but not a motor in sight for Henry.

Intrepid Brits breathe new life into remote villages abroad. Landscape gardeners Paul and Yip explore their new Normandy settlement. Francesca and Carl buy an Italian hamlet.

Colin Murray, Rachel Riley and Susie Dent host, with Rory Bremner in Dictionary Corner, as contestants race against the clock to pit their wits against vowels, consonants and numbers.

On Spain's Orihuela Costa, can Jean Johansson find a holiday home that works for all three generations of Karen and Paul's family for £75,000.

Sidhbh and Neasa gamble on moving their clinic. Hurricanes wreck David and Gina's holiday apartments. And Laura and Lindsay prepare for a new arrival.

Ben and Billie dream of transforming their tired orangerie into a tranquil retreat. Jon and Carmen rush to finish their wedding path.

Shaun Garner's Almería property picks give Keith and Tracy a dilemma. And can the Aldertons find the perfect Costa Blanca pad for Margaret and Basil.

Channel 4's flagship news programme. Including the weather.

It's a clash of the titans when nine-year-old Helena meets Zeus the Shih Tzu. And will jittery retriever Pipet panic when she meets Tom and Ayesha.

It's the Playtime phase as the virgins are encouraged to explore their sexual fantasies and embrace their kinky side - from submission and dominance to bondage and impact play.

The dramatic story of twin sisters defrauded by a sinister con artist who masqueraded as a generous, fun-loving firefighter but wasn't such a hero after all.

At The Royal Marsden, Will needs a new windpipe due to throat cancer. And a rare tumour means all of Melissa's reproductive system must be removed if she's to survive.