[Mithalwen]

He was Arthur Dent in the film version of the Hitchhiker's Guide to the Galaxy as well as Tim in the British version of the Office and was also in Love Actually. He is a good actor - more an everyman type than the ultra bourgeouis Bilbo of the book version but I think he would do it as well as anyone and better than most. The only person I would prefer would be Michael C Hall because in his role of David in Six Feet Under he managed the trick of playing a character who was likeable despite being repressed and prissy. But I guess playing Dexter would now make him too much of an odd choice!