1. Avatar - Despite the story having similarities with Dances with Wolves and being a little cliche, I still enjoyed it a lot. The CG was great, and made me want to believe that the Naavi could be real. It left me wanting a sequel right away, not to mention a Blu-Ray copy >,<
2. Up - This movie caught me off guard, I didn't think it would be so emotional at some points. Pixar's definitive movie? Maybe.
3. Inglorious Basterds - Awesome dialog in this movie. Landa was absolutely mesmerizing and kept me at the edge of my seat. This could've been a low budget film and have the same outcome for me.
4. Star Trek - Great reboot, awesome opening, full of action, and moments that make you say "Wow". It had some comedic moments in there that balanced out the movie.
5. District 9 - There isn't any movie like it. It has a nice story, I loved how the film treats the protagonist and see all the predicaments he gets himself into. Poor guy.
Honorable mentions:
Ponyo - Great movie! Hayao Miyazaki has definitely surpassed Disney in terms of quality recently.
Watchmen - Totally forgot this was released this year. Good movie, just didn't leave a lasting impression on me, but I still liked it.
Drag Me to Hell - More Sam Raimi horror films please.
Up in the Air
Brothers
Hurts Locker