Iron Man is awesome. When I got out of the theater I felt like celebrating for Jon Favreau and Robert Downey, Jr. It's true that the film could've been pretty mediocre without Downey, but thankfully they did the right thing and cast someone who could be entertaining both in and out of the Iron Man armor. I think this is perhaps the best Marvel comics adaptation so far, although X-2 is a very close second. I also think it trumps Batman Begins, which I thought was good but found the action directing to be really sub-par (lightning quick cuts and flying limbs, you couldn't tell what was happening!) Like any action movie there are a few sequences that are pretty basic, but there are also a few that really dazzle. This completely cured the superhero movie hangover I had after watching the formerly great Sam Raimi's piece of trash that wasn't worthy of the title, Spider-Man 3.
IMDB
