Wow, I totally love
The Hippy Matrix Avatar! I tried to keep my expectations low, even with all of the praise its been receiving. And I apparently kept them low enough, because I was really really really charmed by this movie.
My one and only criticism is that the last 1/3 dragged pretty badly. I was perfectly okay with a thin, one-dimensional, predictable, retread story, but for god's sake, if I know where you're going, don't waste my time getting there.
But the sheer beauty and wonder of the film was enough to overcome even that. Bravo, Mr. Cameron.
And, thanks to Mythbusters, the one moment that I probably would have otherwise rolled my eyes and and cried foul fell squarely into "plausible":