Dead Ringers

In a festive special, Ozzy Osbourne makes an (almost heartfelt) Christmas appeal. Nigella Lawson manages to make unblocking the toilet sound sexy in her usual sensual manner, while Darth Vader of "Star Wars" pays the Queen a visit during her Christmas message to her subjects. Anne Robinson hosts a "The Weakest Link Trappist Monk" special to find out "Who is the weakest monk?" Unfortunately, the monks have taken a vow of silence. Prime Minister Tony Blair makes some important soundbites, while waiting for a bus, and Amanda Burton is back as forensic pathologist Sam Ryan to give a very detailed analysis of her birthday cake.

Impressionists Jon Culshaw, Jan Ravens, Phil Cornwell, Kevin Connelly and Mark Perry send up a host of celebrities in this festive edition of the satirical sketch show. The team star in an irreverent take on Bleak House, the Queen hits the street to find out what should go into this year's Christmas speech, and David Tennant invites Doctor Who's previous incarnations round for tea.