'Iron Man 2' is good, nothing special, but good.
Robert Downey Jr. is just as entertaining in the lead role, while the specials efforts are again pleasing. The score, which I found slightly lacking in 'Iron Man', is improved. The plot isn't as interesting, or all that creative, but it's done well enough that I didn't ever feel bored; though some of the pacing is off.
I like Don Cheadle so it's good to see him come in, even if his character is rather forgettable. Scarlett Johansson is also a solid addition, though Sam Rockwell didn't do anything for me in his role. Mickey Rourke is fun enough as Ivan.