I've never seen a 3D movie myself, but AFAIK, there are two types of 3D movies. Those that are filmed/rendered in 3D and are therefore quite good (Avatar, How to train your dragon, Toy story 3), and those that got 3D post-processing (Last airbender)
The former group rocks, if you don't mind the glasses. The latter group is wtf full of fail.
As for games, I really like the 3D effect, because it's awesome and rendered the same way the former group of movies is. That is, as long as the game uses 3D glasses and doesn't have weird rendering problems in 3D mode (borderlands shadows and coronas). However, people hate 3D glasses and opt for cheap 3D "hacks" that don't actually work. That's the real problem, IMO.
I've read about a year ago that Apple was working on a new 3D projector/screen set-up that is glasses-free, 3D, and quite versatile. Because it tracks user head movement, it's 3D regardless of viewing angle and position. Of course, that all falls flat when you have more than one person looking at the screen
