Finally got around to seeing this over the weekend. Above average.
As good as the first movie overall, better in some aspects. All due respect to Terrance Howard, but Don Cheadle is a better Rhodey, IMO. Johannson as Black widow is fantastic. Nice to see more of Nick fury this time around. And the post-end credits sequence got a squee out of me. I admit it.
To whomever is in charge of such things: Please give Jon Favreau whatever he wants to do a third Iron Man movie.