Good story-line (though predictable in a cliche'-esque fashion) to complement an excellent and industry-changing special effects job by James Cameron. Saw this in Imax & 3D, and can't imagine seeing it any other way. It felt like a nearly 3 hour roller coaster ride, bringing the viewer into the movie both emotionally and physically. The story-line was good, but not great. I say this only because it was quite predictable. Had it not been for the 3D, IMAX, special affects, technological advances, etc....Avatar would be a 2.5 star movie, average at best.