Perfection (BBC2, 4.30pm) Quizshow where contestants must strive for perfection. Hosted by Nick Knowles.
The Birth Of Britain (Channel 4, 8pm) Documentary on the geological creation of Britain. Presented by Tony Robinson.
Ready, Steady, Drink (BBC3, 9pm) Documentary on the UK's drinking culture, with actress Emily Atack from The Inbetweeners.
Britain's Banks: Too Big To Save? (BBC2, 9pm) Documentary looking at what's been achieved and improved with the worldwide banking system following the crash two years ago.
My Big Fat Gypsy Wedding (Channel 4, 9pm) Five-part documentary on weddings for so-called travelers.
The Cleveland Show (E4, 10pm) Season 2 of the US animated comedy.
Coming Of Age (BBC3, 10.30pm) Teen sitcom.
Cowboy Builders (Five, 8pm) Series looking at the problems customers have with manipulative or incompetent builders.
Mary Portas: Secret Shoppers (Channel 4, 9pm) Four-part series on customer service. Presented by Mary Portas.
Hattie (BBC4, 9pm) Bio-drama of the popular comedian, famous for her roles in the Carry On movies. Starring Ruth Jones.
Never Mind The Buzzcocks (BBC2, 10pm) Previously unaired episode of the raucous pop quiz, hosted by Russell Brand shortly after the "Sachsgate" scandal.
The Joy Of Teen Sex (Channel 4, 10pm) Series exploring the sex lives of modern teenagers. Presented by Dr Rachael Jones.
American Idol (ITV2, 8pm) Return of the US singing competition. Hosted by Ryan Seacrest, with new judges Jennifer Lopez and Stephen Tyler joining Randy Jackson. Continues Friday.
Rome Wasn't Built In A Day (Channel 4, 9pm) Six-part series where modern builders try to create an authentic Roman villa with today's techniques and materials.
10 O'Clock Live (Channel 4, 10pm) Brand new comedy series with a satirical view on the week's news. Presented by David Mitchell, Jimmy Carr, Lauren Laverne & Charlie Brooker.
The 50 Funniest Moments 2010 (Channel 4, 9pm) Countdown of last year's most hilarious incidents.
The Killing (BBC4, 9pm) Scandinavian crime drama. Double-bill.
The Tudors (BBC2, 9.45pm) Season 4 of the historical drama.
Nurse Jackie (BBC2, 10.40pm) Season 2 of the US medical drama. Stars Edie Falco, Eve Best, Merritt Wever, Paul Schulze & Peter Facinelli.
Terry Wogan's Ireland (BBC1, 9pm) Travelogue of Ireland. Presented by Terry Wogan.
Being Human (BBC3, 9pm) Series 3 of the supernatural comedy-drama. Stars Aidan Turner, Russell Tovey, Lenora Crichlow & Sinead O'Keenan.
Justice (BBC4, 9pm) Televised debate on modern Britain.