Actor Robert Downey Jr. told MTV Movies Blog that there is definitely a (somewhat) surprise cameo by a big actor at the end of 'Iron Man'. He wouldn't say who that was, but he did give fans the scoop on his own appearance in 'The Incredible Hulk'
"It happens to be a scene where I basically approach [William Hurt's character, General Ross], and we may be considering going into some sort of limited partnership together," Downey stated.
Adding, Downey said, "The great thing is he — and I don't want to give too much away — but he's in disrepair at the time I find him. It was really fun seeing him play this really powerful character who's half in the bag."