Just saw it. Wow, I was impressed. Definitely an A movie. While I am a comic fan it is very hard to translate a comic book character on to the screen. I had big doubts seeing that Robert Downey Jr was to play Tony Stark. He is not someone I would have cast. Especially with his spotty lifestyle choices of late and runins with the law and rehab. Downey does an excellent job as Stark. There is a story I didn't expect and character developement also. I am sure that devote fans will moan and groan over the script but for a character that has been around for 40 yrs or so you have to pick and choose. The writers did a brillant job and the special effects did not over whelm the story. A rare and refreshing change. There was interesting banter between Tony and Pepper but thankfully no sex. The villan was unexpected and well done. I would actually go and pay to see this movie again and there are very few I would say that about.
Stay for the spoiler scene at the very end of the credits. It reveals Nick Fury the head of Shield and is a bit of a promo for the Shield movie and the Avengers movie. Again a bit of surprise casting for Nick Fury.