I watched Avatar and I can say that it is a modernized "Pocahontas" fairytale. The film-makers have created an amazing world, where imagination has no limits, you will fall in love with the new world and with the incredible creatures there. Don't expect much from the plot though, just enjoy what you see. And while the story is quite simple and predictable, I think there is a message sent to the viewers.
edit: this is the 1111st post in the thread, that must be a sign for something. Well, I drank one beer during the movie, one cocktail after it, one glass of wine for a dinner, maybe something tells me that it's time for vodka at such cold night.