Solid action movie, but the visuals put it over the top. Saw it in 3D and can't imagine doing it any other way.
The motion capture in particular was pretty impressive. As one who works with animators closely from time to time, the facial expression stuff is pretty damn revolutionary as far as the entertainment industry goes. Such subtlety!
And considering it is past breaking even, as far as box office profits go a sequel is pretty much garunteed. Not sure how I feel about that, though Cameron has a knack for doing excellent sequels.
I want it. I want it bad. I didn't think the movie was amazing story-wise, but I was completely sold on the lifeforms and world Cameron was pitching. I found myself so interested in all the daily tribe activities and really wanted to see more of what Jake had to go through. I'd completely eat up a sequel if we got to look deeper into na'vi life.
Also thirding the "pay to go see it in 3D you won't be disappointed and you kind of need to" sentiments.