Since I'm a pretty big comic book guy I never saw the Mandarin's reveal coming.
Granted, it was hilarious, and Ben really sold both parts of his character (The Trevor scenes were so great). The movie lover in me loved it, the comic book lover in me was a little disappointed (The Mandarin is Iron Man's arch-nemesis after all. So I can understand the Iron Man fans being a little peeved at Shane Black and co.
)
I was wondering why his videos and "Mandarin" moments seemed so over the top (him crushing fortune cookies. People calling him "The Master", etc. etc.), but the reveal made those moments seem even funnier. Might give it another watch just to see his moments in the new light.
However, my biggest head-scratcher moment was at the end when he removes the piece of shrapnel in his heart (and with that, no longer needs his arc reactor). They really don't explain it at all and it just sort of happens. I mean, the first two movies he needs the arc reactor to keep the shrapnel from going any further in his heart, and the second movie was all about him finding a new method to power the arc reactor so he wouldn't die of poisoning. If it was so easily fixed, why not do it in the 1st movie after he got home? 
Other than that, I enjoyed the movie. Lots of humor, nice (if a bit over the top by the end) action sequences, good acting from the cast, and some (as said before) hilarious plot twists. Definitely better than Iron Man 2, that's for sure. ^_^








