As an avid reader of the Iron Man comics, I was excited but also very scared that this movie would flop.
While Robert Downey is not the biggest name in Hollywood, he plays the part perfectly and I was greatly impressed by how he portrayed Iron Man so well.
The humor works well for this film also. It's well-written and has a great cast.
What impressed me the most was the CGI! They're breath-taking, but aren't distracting enough to let you miss the finer points of this movie.
In conclusion, while not perfect, Iron Man lives up to its hype and my expectations as a reader of the comic.