Great thread, maybe start a poll after a couple pages?
For me, its probably The Prestige, Christian Bale amazes me with his acting skills in nearly every film.
Close second is probably Children of Men, wish Holllywood would make more like this.
Notable Mention - Pan's Labyrinth was really good too, though not really in fitting with my tastes, however good to see a film like this do so well though. The Departed, good movie, though after seeing Infernal Affairs a few years ago it didn't wow me like it did to few others.
Pending - Havent seen The Fountain (from the director of Pi and Requiem for a Dream), Flags of our Fathers, Letters From Iwo Jima and Babel
Biggest surprise - The new Bond was good, nice change up to the decaying franchise, though i'm yet to see the new Rocky which is becoming a bit of a surpise hit also.
Biggest Letdown - The Da Vinci Code, i enjoyed the book, but the film really didn't cut it,Fearless, was expecting so much from this film, but it just didn't deliver.