The main plot is similar to Kevin Costner's Dance with Wolves. Indian didn't win but Navi makes it.
Like Terminator, Avatar sets new high standards for special effects, in particular, CG.
And last but not the least, it's a movie for lovers. Personally, I prefer to Dance with Wolves. It's a movie I can watch for many times, alone. But if with my lover, Avatar is the definite choice. The question is: Can Avatar refresh the Titanic record?