Quote Originally Posted by BoulderDawg View Post
One more thing....Notice how they set it up perfectly for the sequel.
Here's what JC has to say about it:
“I’ve had a storyline in mind from the start — there are even scenes in Avatar that I kept in because they lead to the sequel. It just makes sense to think of it as a two or three film arc, in terms of the business plan. The CG plants and trees and creatures and the musculo-skeletal rigging of the main characters — that all takes an enormous amount of time to create. It’d be a waste not to use it again.”
Sam Worthington is already signed to play Jake Sully again and suggests "Jake should have abused his avatar and be fat and unfit and demand Neyteri to get him a beer."

Meanwhile producer Jon Landau has this to say about a sequel:
If the public likes Avatar, it’s a possibility. After all, here we are exploring the surface of the planet Pandora. The interior remains to be seen.
However there's still work on the other film JC was developing along side of AVATAR: Battle Angel