How many more years do you think it will take before computer-generated images in movies will be undetectable?
They do a good job with inanimate objects, but with something that is alive or flowing (like hair, or water) the technology just isn't there yet. About the best I've seen was in one of the Matrix movies. The one where Neo fights a bunch of agent Smiths. It was good, but still looked cartoonish. Another example would be the computer-generated ocean scenes in the movie
The Perfect Storm, the water just looks cartoonish to me. Also I just saw a commercial for a King Kong remake that's about to be released. It showed a digital Kong from the waste down, and the fur looks cartoonish.