I just thought I should mention I, surprising even myself, enjoyed the movie quite a bit.
Yes, the plot is nothing new... but it makes sense. The studio would not have risked giving Cameron 300million for a untested plot in an untested technology. So they went with the safer route of tested plot in untested technology. That was the breakthrough... this movie is going to change how filmmaking is done, and that's what I found impressive. Now that they know the technology works, we're going to see more risks being taken.
Yes, I'm with you in aaall the grievances you might have with the plot, I agree with all of them. But that doesn't detract from the fact that Avatar made me feel like a kid going to the theatre for the first time. And that's a fucking good feeling to have, and I thank Cameron for it.
And I look forward to the ripples his film is going to cause.