I'm a bit hesitant about this movie. The first one was fun. (I still call it to this day one of the best comic-book movies ever made.)
The second one...meh, it felt like a warm re-hash of the first one.
The Avengers? They should have just skipped that and went straight to this.
So now, we're here. Looks like "Serious Bidness, Y'all". Could go either way, particularly with the Extremis plot being, well, kinda ridiculous (yes, yes, I know, of all things to pick on...). But, on the other hand, RDJ is really a good actor, and frankly, the entire series probably would have fallen apart had they gotten anyone else to play him (Hollywood is full of full-on douchebags and full-on "nice guys", but nobody seems to have a handle on both quite the way RDJ does).
So, I'm in. Hell, I knew I'd hate The Avengers and I saw that. How much worse could this be?