I thought Iron Man 1 was pretty clever. Down right smart for an action movie, but as good as Mickey Rourke was (I was surprised, I expected to not like him) Whiplash is kind of a crappy villain. They set up The Mandarin in the first movie, why not go that way?
If you wanted to do the Russian thing, how about The Titianium Man?
Never going to happen, but I'd love to see Fin Fang Foom make his Movie debut.
Of course, as I've got Mjiolnir tattooed on my forearm, so this movie could have completely blown and I'd have been OK due to the credits.
Shameless self plug, speaking of superior Marvel villains, check out these 2 videos.
http://www.youtube.com/watch?v=RokEgUTI2vIhttp://www.youtube.com/watch?v=DtJkeRPi1ycThat's me in the suit