This all 3D-to-the-eyes is an old trick, but over the past year I've started to think that now theres actually good technology available for it.
I purchased myself the NVIDIA 3D Vision and played with it on various games. My favourite game for the past year has been left4dead and the 3D effect on it is really outstanding - everything looks so much scarier and you actually feel like being there.
The old cheap tricks are quite obsolote now as tech has improvent. But the future of gaming and movies surely is in this 3D and "be there" experience. Even MS and Sony have admitted that just pushing megapixels and polygony amount isn't the best thing, as they're at their maximum already anyway. We always see these things in movies, but the technology isn't really far from there now.
Now the only thing is about making it convenient for end users.