Just watched this, thoughts below:
+Funny in places, Stark in particular.
+Some nice action set pieces around NYC
+Good sound
-First half was pretty boring
-As someone who hasn't watched any of the recent Marvel films, I felt the characters needed a bit more introduction
-Didn't really build much empathy with the characters
-Couldn't really get to grips with the plot at the start
Overall it seemed really overrated to me, I can see that it might impress more on the big screen but it was one of those films I was just glad to see the credits roll. Then again I didn't like X-men either so perhaps not my sort of film.