Depiction of Pandora was beautiful, and especially lovely in 3-D. And the technical/computer expertise is roaring hot! However, the story line was sophomoric at best (yes, James, we're all "green" and we're all connected...if not by tree roots, then by Facebook, Twitter, etc.) and the dialogue was positively moronic. Character development...well, there really wasn't any.
If you can see this in 3-D, it may be worth your time (& plan on spending a lot of time on your fanny - the guy sitting next to me had to get up & out of the row 3 times during the movie!). If not, forget it! 3 Stars for the technical, visual aspects; 0 stars for everything else!