Beautifully done in story telling and, of course, effects. It is a rather well known story, but told in a wonderful way that is riveting, poignant, enriching, and ultimately a sad commentary on humanities failings and the future those failings could bring. A story that needs re-telling as often as necessary. The world Cameron creates is simply gourgeous, a spectacular feast for the eyes. The 3D effects are perfect in their sublety, bringing an incredible depth to the screen that feels very natural, and is quickly overlooked...except for the ocassional dodge! Everyone of age should see this movie (maybe a little older than 13), on the big screen in 3D.