Even as Avatar crosses the billion mark and makes its inexorable journey towards earnings of Titanic proportions (painful pun fully intended), there are numerous folks ever-ready to point out that in spite of all the money spent in making the movie, very little appears to have been earmarked to produce a brand new story.
Avatar has been referred to as a futuristic Dances with wolves or Ferngully to name a few. Let's add Pocahontas to that list, too. (Click on the picture for more clarity).
If you are interested, here's my review of Avatar.