Peter Jackson. He could probably run a pretty good game. Especially if Phillipa Boyens and Fran Walsh are helping him write the adventures.
Christopher Lee could run a great gothic/Ravenloft campaign. Can you imagine that voice taking you through Strahd's castle? Suh-weet.
Akira Kurasowa for an Oriental Adventure. Hey, if we are bringing him back from the dead, I'm sure we can overcome a little language barrier.