You guys watched this clip?
http://www.youtube.com/watch?v=dj1px3WFcFs&fmt=22 Now that is a crappy youtube video, it isn't a true 720p, so imagine it even higher, like, hmm like, imax adding it's gigantic immersion?!
You gotta separate some things: production hype, story hype, final product.
A stupid example but somewhat true, that comes to my mind is Crysis: does this film have to look like real life CG to be AT LEAST DECENT, ANY GOOD and cause some evolution? C'mon Avatar is just a movie, you go there, sit, watch and go home. It doesn't need to be on "ultra high" to be watchable/playable because some stupid film critic/journalist said. Forget all the production hype and the first crappy avatar teasers, because they really were crap.
Like the Crysis example the story isn't all that great, it's a montage of numerous things, cliches (compare with any movie you want). The big thing is the change that Avatar is doing in the business; now we will have a lot of 3d movies coming out, and conversions etc. all because of investments in the nature, size of avatar and it's impact alone, with costs of $300-500 Millions just for this film. With this evolution we'll have Tron Legacy with avatar cameras, a new Alien in 3d, maybe the conversions of the lord of the rings, star wars, etc. to 3d and so on and on.
But, just forget the hype. Go see for yourself and enjoy the final product on a cinema and not a little TV, then come back and comment it.
It's bad for me that there isn't any 3D near here, I'll watch on 2D so.