Saw Iron Man.
It was fantastic. My brain always is watching these things and looking at how they're done, but it was minimal in this movie.
A few annoying logic holes, though. What kind of idiot gives a brilliant engineer the materials to make a weapon while they're being kept captive and doesn't realize that yes, they will use said weapons against you.
And I find it hard to believe that a man in an iron suit would be so much more effective than a robot.