Is it April the first..?

"TV timelord Dr Who is about to face his toughest challenge yet - by finding himself trapped inside the Big Brother house.

The show’s writer, Russell T Davies, has revealed that in the penultimate episode of this series, the Tardis will take the Doctor (Christopher Ecclestone) and sidekick Rose (Billie Piper) to a futuristic reality TV land where Big Brother is still running. BBC bosses have even enlisted the help of Channel 4 to make the episode as authentic as possible - and are in talks with Davina McCall to provide her famous BB catchphrases for it.

As the Doctor plots his escape from the Big Brother house, Rose, meanwhile, finds herself competing on a strange, futuristic version of The Weakest Link - only to discover that mean quizmaster Anne Robinson has been replaced by a robot."