Just got back from this a bit ago and have to say beat out my expectations. It was really well balanced when it came to action, humor, seriousness. This is a movie to see this summer.
The opening previews have the new Batman preview in there too. Wow, I can see why Heath Ledger had issues sleeping after trying so hard to capture the sheer insanity of the Joker.
Anyway back on subject, 2 words:
SEE IT!
Now I just wish I had the dough for an Iron Man themed case because I have so many ideas in the noodle right now.