I saw it last night.
Pretty good entertainment, but nothing really knew in there, if you ask me. In fact too much "dejá vu " IMHO, from the story to the production.
We´ve gotten used to Hollywood´s amazing special effects on many a production in recent years, so I couldn´t help but feel I was watching a mix of Spiderman ( the flying sequences ) and Transformers ( the robot fight ).
I agree Downey´s acting is very good. It´s cool to watch one´s childhood heros so well portrayed.
What I really enjoyed was once again watching that most classy of present day Hollywood actresses, Gwineth Paltrow. Not he prettiest, not the sexiest, but IMO definitely the classiest.
Jorge