okay, just read all your replies to the 'white as savior' thingie. some of you made valid points, but let me try to retort...
snakes on a plane has a black dude as an FBI agent(or was it DEA?), whether he was black or white or mexican, he would still be the ideal candidate to lead the passengers to safety, if only because of his profession.
jake sully became the savior to an entire race. he and only he alone could tame and ride the red beastie when all the present natives around him could not. he won the heart of the native's princess and save the native's world all by his lonesome because the native's gaia listened to his words. and he's happened to be portrayed by a white dude.
sure, subtext is superimposed by the viewers. but if the races are switched, and jake sully is a black or a mexican dude and the natives turned caucasians, would you, the white audience, would not have picked up on it? honestly now. and how would the blacks feel in the na'vi were not blue but instead played by blacks? hmm? i'll bet my dvd collections there'd be an uproar from the black communities.
glad to see denzel play a savior in the upcoming book of eli. the movie is not out yet so i dont know if denzel will get to kiss a white princess in it, or do things only the ordained could do(like ride the red beastie or some such) that can get all the whites to look at him in awe, or save the entire white race singlehandedly... i dont know. but i do know that is a step forward. and i'm absolutely positively sure all colors will get their chance to shine in the movies. it's just a matter of time. but for now, avatar is not furthering any cause but the white's. and i'm only about the subtext here, not the movie's ecological message.
long post sorry. feel free to ignore or dissect it.