It's a Robert Downey Jr show

Robert Downey Jr is one of the best actors in Hollywood today. He completely convincing in his role as Tony Stark/Iron Man. The rest of the cast is excellent as well, no weak spots.

The movie is engrossing from start to finish. They seem to have taken a few cues from Batman Begins and tried very hard to make the action and the technology believable (I do mean believable, not realistic, it's based on a comic book after all). For the most part, everyone follows the rules of physics. The only thing about the movie that really bothered me was how Iron Monger managed to master his suit instantly, while it took Tony Stark several weeks (months?) to do the same. Still, this was about the only false move the writers made.

Doesn't set the gold standard for superhero or comic book movies (that is still Batman Begins), but it's a damn good movie regardless.

9/10