Wait, we already had this talk. I haven't seen the film, but after hearing about the basic plot structure and the ways this film differs from the last, I have to confess I may be irreparably poisoned against this movie, simply because the things I've heard are missing here and some of the contradictions folks have been mentioning to me (Stark was living an entire movie under the threat of death before this-I find it odd that he'd suddenly decide to go manic-depressive under a new threat of imminent doom. I mean, the guy was positive he'd be dead in a week and he still found the time to build a mech suit)... Let's just say at this point Iron Man 2 is going to have to be really, really so much better than what I'm expecting.
I mean, Iron Man was unexpectedly brilliant. A nice juxtaposition of larger-than-life superheroics, genuinely funny comedy, good casting and gritty realism kept the thing moving. But in the sequels, well... If anything in that formula is missing or not quite as good as it was, the movie is going to feel lacking. Not every sequel can be Empire Strikes Back.
And disappointing last fight my butt (in the original Iron Man). I thought the idea of Stark basically using his Pacemaker to fight the bad guy and balancing his own life against the safety of others (a literal battle of self-sacrifice) was a brilliant move. Maybe the action wasn't BIGGER AND BETTERER than what came before, but it was more poignant and had more relevance to the character conflicts which led up to that moment.