Robert Downey Jr. does a wonderful job playing the well to do, playboy arms dealer, engineer Tony Stark. I haven't seen a character portrayal as good since Ron Perlman in Hellboy. I just hope they continue to keep the same main supporting actors as they all did a wonderful job as well. Looks like a great beginning for the Iron Man series. By the way, don't leave after the credits start rolling. There is a small treat at the end of them.