Ok, everyone hears how Avatar is changing the way movies will be made.. and it doesn't resonate for everyone.
Check out the video on this page
An Epic 22-Minute Behind-the-Scenes of Avatar - Avatar - Gizmodo
It's a flim much like you find as bonus features on a DVD. Jump to about 14:00 min in the video and watch how they IN REAL TIME ON THE CAMERA did all the compositing so that the camera and director saw what the CG + film footage looked like. It's crazy advances like this and countless others that set the foundation that Avatar probably changes everything.
Check it out... pretty amazing stuff. I can't wait till this thing hits disc.. the bonus content should be absolutely amazing.