Iron Man 2 is a smart movie. It knows that people come to see it for two reasons; one being Robert Downey Jr. being Robert Downey Jr., the other being big action set pieces. Iron Man 2 delivers on both accounts with gusto.
Special merit should be given to Sam Rockwell, who's Justin Hammer is truly a delight to watch as he weasels about the screen.
If there is anything that disapoints in this film, then it would be the final confrontation with the main villain. It almost feels like John Favreau forgot about it and then had to tack it on at the end. It's rather anticlimactic and if you blink it's over.
Let it be known that I am not a die-hard Trekkie, I've enjoyed the various shows from time to time but never got that into them. That being said I really really enjoyed this film. The film's funny, got great action sequences, has a cast that's enjoyable in their roles and is just an all around strong summer action flick.