Jack Black: "I'm Not Bilbo"

Jack Black denies rumors that he is going to be cast as Bilbo Baggins. Uh. Uh. So does this mean that Bilbo will be played by James McAvoy as rumored in some blogs?

If Jack is not Bilbo, can the producers at least cast him as a hobbit. His fatness and his mischievous eyes are "hobbitish", don't you think.