Which TV episode made you laugh so hard that you cried and what scene was it?

Patrick Stewart on Extras. Daniel Radcliffe and Dame Diana Rigg on a different episode also had me helpless.

Last night watching (UK) Channel 4’s “The Big Fat Quiz of the '90s”, I had to stuff a pillow in my mouth to keep me from waking the child from laughing so hard. Between Dara O’Briain imitating Nelson Mandela and riffing on Babestation, and Jack Whitehall’s fear of Mr Blobby and creepy stalkerdom of the Teletubbies it was bad enough. But when Mr Blobby showed up and mimed banging a Teletubby I thought I was going to rupture something.