I did enjoy the 3D technology in Avatar, it was... "refreshing". Can't say the same for everything else about the movie, though
Anyway, I would REALLY like to know how can Mr. Cameron "Aid" NASA's scientists with a 3D camera; is he an engineer? I wouldn't think that being a (good) movie director would be of much use for space travel, planet landing and so on.
Maybe he is just financing them
...or maybe it is true what they say about NASA and the moon landing, that everything was staged, and they need a good director for the "First man on Mars" movie!