Trailers were nothing special - the next Shrek movie, the Last Airbender (which was pretty, but), and Super 8 (which actually might be good, trailer was interesing and it's J. J. Abrams, so... )
Iron Man 2 was terrific. :) I even ventured after the movie that it might have been better than the first one; obviously, we're going to have to go back and watch the first one. You know, in the name of science. :) It was over the top in places, but, heck, when you're watching a movie about narcissitic multi-billionaire who teched himself into being a superhero... things are going to be over the top sometimes.
There was a fair geek representation in the audience; when we got to the easter egg, there was cheering. (I turned to Jeff: "Would someone please explain to the non-comic book reading person why everyone's so excited?")
So, yes, Iron Man 2, A+, will watch again.
Next up, A-Team!