Underworld and Underworld Evolution are my two favorites, but there are so many great movies I can't possibly be held to that statement. I definately second the motion that we need a longer list. I mean come on:
All three Matrix's, All three Blades, Braveheart, The Last Samurai, definately The Princess Bride, Robin Hood: Men in Tights (anything produced by Mel Brooks for that matter), Batman Begins, V for Vendetta, Hitch, The original Star Wars trilogy, etc., etc.. Blah, I could go on and on... Wait, does that cement my place as an official nerd? Maybe I should retract my list...