Seen in 3-D on a large screen, it's without question the most immersive movie I've ever seen. Honestly, you're too busy gawping over the jaw-dropping beauty of the visuals to care overmuch about the plot. (I once jokingly suggested that Cameron could have done without a plot altogether and simply released the movie as a pseudo nature documentary with narration by Sir David Attenborough, and it would have done just as well at the box office.)