ActorStephen Fry , who narrates the UK audio versions of the Harry Potter novels, is set to join the cast of the upcoming film version of "The Hitchhiker's Guide to the Galaxy.".

Mr Fry will be the voice of the electronic book called 'The Guide' which accompanies the main character in his adventures. Stephen Fry will be part of a cast which also includes Potter actors Alan Rickman (Snape) and Warwick Davis (Professor Flitwick).

Source: The Leaky Cauldron