Its a damn 3 way tie.
Best fights for sure were Iron Man against the terrorists in Gulmera,
In my opinion that scene was one of the worst action scenes I've ever seen in a comic movie.
It was a one sided battle where those terrorists never even had a fighting chance. They shot him out of the air once and everything else was just Iron Man tossing them, blasting them with repulsor rays and shooting one lousy missle at a tank. There was never any sense of danger, it was just plain BORING!
All of the Iron Man action scenes were a little on the bland side for me.
That ridiculous scene where he catches that car and the car actually rolls over top of him, I mean is that suit of armor that small where it can actually fit underneath an audi?...come on man.
That lame part where he gently bonks Iron Monger on the head after the "icing problem" was so pathetic looking, how about a right handed helmet shattering roundhouse punch instead.
Then to top it all off how do they defeat Iron Monger?..Pepper just steps up and pushes the big red Deal or No Deal button,....weak, weak, weak.
I don't know why that movie gets so much praise, it was just slightly above average.