As sequels go, this was pretty good. Given the ups and downs of his life, I think Robert Downey, Jr. has a particular understanding of the conflicts of Tony Stark's life. The introduction of the Black Widow and Nick Fury seemed to slow the movie down a bit. It felt like Fury was thrown in primarily to set up The Avengers film, nothing more. it also seemed odd to me that the best fight scene in the movie was between Stark and Rhodey. By contrast, their battle with Whiplash felt too short and almost anti-climactic. But for what I call a "popcorn" movie, this certainly fills the bill.