They changed up/modernized the Iron Man Origin story a little bit, but this was one of the better Marvel Comic to movie adaptations. I'm no big comic book geek, though I did read them when I was younger, but this was a good movie. I was surprised by Robert Downey Jr., not that he's a bad actor, but that he hasn't done such a blockbuster role so oustandingly in quite a while, so it might catch you off guard. If you liked him in this than check out Tropic Thunder he does exceptionally well for such a spoofed comedy.