Featuring an evil robot in disguise, and a very old Sherlock Holmes with Watson by his side. Plus, how to make sure your family is eating enough cat, and why you can't do shop sketches anymore.

More sketches from David Mitchell and Robert Webb's lopsided world. There's an in-depth documentary about documentaries, and a very angry discussion about christenings.

Sketch comedy from the offbeat world of David Mitchell and Robert Webb. A TV chef travels round the world in a balloon - with a hostage. Plus how the Ku Klux Klan got their name.

More sketch comedy from the quirky world of David Mitchell and Robert Webb. Gilbert and Sullivan announce their new opera about a maverick cop - No Nonsense Harry.

David Mitchell and Robert Webb invite viewers into their lopsided world of sketches. There's a man with a very very tiny office, and Ted and Peter host Late Night Dog Poker.

David Mitchell and Robert Webb return with their brainy but daft sketch show. Find out the correct but confusing way to talk to Caesar and meet David's surprising new wife.