I just rented this, but I was rather leery on it. Usually, IMO, movie games suck (With the exception of "Pirates of the Caribbean" for original Xbox). But the game, like the movie, is epic. It's far from the movie (with the general theme of humans exploiting Pandora and the Navi fighting to get it back), which, I think, makes it better than if it were to follow it closely. You can choose to fight with or against the Navi too.
I chose to fight with the Navi and it's really cool. Only thing I don't like so far is where your camera is situated (third person, off the right shoulder), but I'm just real picky like that :P.
Anyone else playe this? What do you think of it?