Great Sequel (regardless of what has been said). Yes,, there is a lot happening, but I thought Favreau made it work very well.

Howard Stark had a Russian partner named Vanko?!? Who's son wants revenge against the Starks?!? So he creates his own arc reactor?!?

The US Government wants Tony to hand over his Iron Man tech?!?

Who's Justin Hammer?!?

?!?