If you don't follow Iron Man comics then the Stark character doesn't fit with your preconceptions. Robert Downey Jr. and Tony Stark share the same afflictions and the same lifestyle, giving Downey the ability to bring a real feel to the role. I am actually excited to see this movie.
The first Hulk movie was definitely a learning experience for the genre and the movies are getting a little better each time. The truly hopeful thing is that the comic book audience are giving good reviews of the footage released so far. I think the costumes are great. They had the silver suit and the red suit on display at ComicCon and they were AWESOME!!