Iron Man 2 is a really fun, entertaining, funny, action-packed movie. Director Jon Favreau has taken the second installment of this franchise and turned it up to 11! The result is a big, blockbuster summer film.
Don't think though that this is just all flash and no substance -- on the contrary. Robert Downey, Jr's performance as Tony Stark is amazing. He has perfected the character so well that you forget he's just an actor performing lines. The same goes for Sam Rockwell and Mickey Rourke. Great performances that are executed almost flawlessly.
But let's not forget the heart of Iron Man, the action. While there seemed to be a lot more character development and storytelling than you'd think for a movie like this, when the action happens, it's very intense and very satisfying. Very well done visual effects make the film's story believable and realistic, never really taking you out of the story.
I highly recommend this film as it is such a good time that you can't help but love it. Make sure you stay til after the credits if you're a comic book / Avengers fan for a nice little easter egg of what's to come next.