I’ve heard the rumors floating around that Iron Man/Tony Stark might be played by none other than Tom Cruise. Jon Favreau has posted a response to that over at his blog.
I’ve never even met Tom Cruise, though I do think he is a great actor. He doesn’t seem to fit with what Marvel is looking for at this time, but you never know what will happen. The rumor is false as far as I know.
Via Iron Man MySpace forum (link)