I will admit I am an Iron Man fan. (Not a fan-boy, but just a fan. I have one Iron Man action figure and it sits on my desk at my big-boy job. I also don't live with my parents.)
Sorry, back to my point, I'm a fan...and I have the first Iron Man movie to thank for that. It completely re-initialized my respect for the character and the franchise in general.
That being said, Iron Man 2 was EXACTLY WHAT I WAS HOPING FOR. Edgy concepts like Tony's alcoholism, new actors that ADDED to the characterization of the movie without overpowering it. Multiple layers of conflict for Stark, both personally and professionally. I had some fears going into this one because I want it to succeed, but those were all laid to rest with in the first four minutes and then buried for the next two hours.
That all being said, I personally disagree with some movie critics who say this movie has too much of a "Transformers" feel to it. Yes there is a lot of metal crunching, bad-guy munching action in it. And the flight sequences are high-paced and action packed. However this does NOT cause the shaky-camera mounted to Optimus Prime's knee while tangoing on the sun effect that most of the Transformer movies suffer from. Those seem WAY to busy, but Iron Man 2 settles into a nice groove and sticks with it. Besides, it's a movie about dudes in metal suits fighting each other. What kind of sound and visual effects were they expecting? An old time car horns and rainbows??
Go see it. It's Iron Man 2 for God's sake. What are you saving your summer blockbuster money for? Marmaduke??