I prefer the first Iron Man movie to the second, but both are good films in my opinion. Can't wait for 3 this year. Shane Black is directing, he and RDJ make a great combo.
From the updates, it sounds like Stark isn't quite living up to being Iron Man. Or at least the pressures of being a hero are getting to him, and Rhodes has to pick up the slack. Guess there are going to be armored suits galore in this one...