Back to the subject of the poll-
I think my sister described Avatar best when she said it's like Fern Gully on crack. Sure, the visuals were stunning and incredible- but the storyline was just awful. The acting was fairly terrible, with the only saving grace being Sigourney Weaver the legend.
I absolutely hated the fact that it was trumpeted as this massive masterpiece of a movie, and consequentially had a bunch of bandwagon jumpers parading it as the best movie of all time.
I literally jumped out of my chair when the Hurt Locker won- because it truly deserved it. It was a tremendously well made movie and was enjoyable from start to finish.
This one's obviously a no-brainer for me.
Also- Basterds should have given more applause- but as many people alluded to here- just the wrong time to have that movie. Really glad that Christoph Walz won best supporting though, he was REMARKABLE in that movie.