I don't think it's worth the extra money to see something in 3D. The movies I've seen in 3d, i haven't been impressed. I can enjoy a movie just as well without it being 3D, and then I don't have to worry about the glasses. I also think 3D TV is stupid, because you have to wear glasses to watch TV. I don't wanna worry about 3D glasses while relaxing and watching TV, especially since i tend to multi-task and do other things with the TV in the background.
On the other hand, I think the 3DS will be awesome, because you don't need the glasses, so the only real problem is eliminated, and I think it will enhance the otherwise so-so graphics of the portable game system.