Tonight the husband and I went to see Iron Man 2. I don't remember a lot of the first one, other than the basics. Robert Downey Jr. makes himself a contraption to keep himself alive, and it more or less powers his Iron Man suit.
In the second movie, Mickey Rourke's character wants to put an end to Tony Stark for reasons I won't give away. He creates his own suit to try and kill Tony, or at least show the world that he isn't God afterall. He gets up into jail and then gets busted out by a guy who also wants to see Robert Downey Jr.'s character gone.
I won't give away too much of the movie, what's the fun in that? I would say it's worth seeing, although if you're not into the comic book characters, save it for a rental or Netflix.
Overall, on a scale of 1-5, I would give Iron Man 2 a 3.5. There were parts that made you laugh, parts that might make you jump, and some other parts that weren't of much importance.