I loved hoe Tony Stark lifts off as an immensely talented superhero. He liftd off literally and figuratively. He deserves his own movie before these superheroes do final assembly as directed. But for now, let's say that Robert Downey Jr. is truly the man with incredible superheroic status in the town, broiling with fervor.
And he is so cool that he makes for the bumps in the film's screenwriting, a little clumsy and structural lousiness-laden. I am going with three and a half stsrs for the third part of 'Iron Man' franchise. Not the best, but still, really beyond very engaging.

Is it the suit which is more important or the man who built the suit. Movie explore this question and explores it pretty well. There are lot of scenes where our hero is without suit, or with partial suit, or with broken suit or so on. But you don't care because you are still having loads of fun and thrills. After Dark Knight trilogy, superheros have become more real, mortal, relatable and charming. Same goes for Iron Man 3. This is the right mix-up of fun, emotions, thrills, action and special effects. Things go never over the top and even if they do there is light humour attached to it. RDJ is again at his charming best. His scenes with little boy are heart rendering. Ben Kingsley is terrific and Guy Pearce good enough. Overall, must watch even in 3D