OK, I saw Avatar 3-D yesterday.
I didn't see it at an IMAX theater but I was surprisingly impressed by the 3-D effects. A few months ago I was at a computer show for vendors and watched a 3-D demonstration using electronic glasses that blinked polarized lenses as shutters. Whatever method was used in Avatar used glasses but not electronic ones. The effect however was as good as I recall seeing at that computer show and the screen was WAY BIGGER.
The movie was like a combination of Vietnam, Dances with Wolves, Aliens and Fern Gully.
Heavy on the Fern Gully.
It totally blows away Star Trek which had nothing to say and beats it for effects. I am going to go again soon which I haven't done for any movie since The Matrix. That was 10 years 9 1/2 months ago.