We saw Iron man this afternoon. It's awesome! Yes, it's a comic book movie, but you don't need to know much about the comic to really enjoy the movie. There is a profound subtext in the movie about the responsibilities and containment of weapons technology. Of course there's the requisite good versus evil elements, but there's much more to the movie than that, too. There are some elements of the movie that require some suspension of disbelief, but it's a movie well worth watching.
If you do see it, stay right until the end of the credits. I'm not telling you what's there, but it's more than just the song titles, thank yous, and MPAA number :)
BTW I was just looking at the imdb full credits page for this movie and I see that many of the effects people have pages. Interesting - they aren't just faceless tech employees anymore. Nice.