The first Iron Man, although not being an amazing film, is at least somewhat distinct - which is a fair achievement since it's not necessarily the most original film. Iron Man 2 is not so distinct, and in places feels like a rehash of the first film.

It would usually be customary to write some more about the various aspects of the film, but most were just so forgettable (or near-identical to the first film.)

If you really enjoyed the first Iron Man then you'll surely enjoy this; if you didn't, then tough luck since it doesn't offer much that's new - although it's a perfectly competent film.