I saw the first Iron Man movie and it was pretty decent. It had an interesting story, in my opinion, and the ideas behind the technology was intriguing. From that trailer, it looks like it's going to lack any real storyline besides "beat NEW EVIL BAD DUDE", but I guess it's hard to tell from just one trailer. :\ I think it would have been better if they just left it at the first movie instead of trying to make a sequel but whatever.