Will be going for my 4th time tomorrow. I can see me watching this movie a couple dozen times, it is that good. On DVD it will lose a lot of its zeal, but it will still have 10 foot tall blue chicks with tails.
If you go to the RealD 3D screenings and are not impressed by the 3D, well then you have other more pressing issues you need to deal with.
Last week I found several high-res photos and printed them full width on the Mutoh. (Oh no he din't, oh yes Laverne, he did). They are now gracing my office. One is a full face closeup of Jake Scully's avatar and people will argue for hours over how it is not a computer generated image. The detail is astounding.
I am partial to Neytiri. She is obviously hot (as is her human driver), but the key is that after watching the movie (if you allow the suspension of disbelief and why wouldn't you after dropping $10) you sort of forget they are 10 foot tall, and blue, and have tails. They are just characters in the film.