Kung Fu Panda - Looked like a pile of rubbish on the ads, I was dragged to it by friends and didn't stop laughing through most of it. The fight scenes were brilliantly animated I thought.
Rocky Balboa - I never liked any of them after the first one, expected the new one to be awful. But I actually enjoyed it quite a bit.
Rambo - Once again, Sly somehow managed to pull an old franchise out of the clogged, feces filled public toilet it was in, scrub it down and produce something pretty good.
Love Actually - Before I saw this I was of the mindset that all romantic comedies sucked. Because none of them got the comedy part quite right. It was all romance. But this movie was absolutely hilarious, and changed my mind on the entire genre.
Batman Begins - I was completely against it until I was forced to watch it with my little brother. Awesome movie though. Christian Bale kicks ass as Batman.
I'm quite shocked that people were actually surprised by The Dark Knight. Ever since I heard it was being made I wanted to watch it. And when I saw the first clips of Ledger as the Joker I was dying for it. Seen it three times in the theater so far. I'm obsessive like that.