It's here to stay, and it's already in games; if you have the tech...
I experimented with anaglyph 3d using the Iz3d system Ati is pushing right now...
(they're being less obvious about it than Nvidia, but they're still doing it.)
Problem is, it requires expensive tech, or the effect is really dodgy. (anaglyph glasses are the cheap option, but the mess it makes of colour is a real distraction.)
And to those who think it'll make games really expensive in the way it does with film:
Don't. 3d graphics don't require much of anything a game isn't already doing.
You need faster hardware, (twice as much work needs doing), but other than that, you can turn it on even in something ancient like Quake 1...
But... The headaches it creates, and the need for glasses of any sort is irritating.
This won't become all that great until we can get past the 'stereoscopic' only effects.
There's more to depth perception than the different images for each eye.
I'm personally hoping this becomes available sometime soon:
http://www.i4u.com/article9159.html
SeeReal's holographic display - uses eye tracking to reconstruct a full waveform across the field of view; This produces a proper holographic image just like a real object would produce, meaning the focal depth is correct too, not just the stereoscopic image.
The use of eye tracking makes it viable, because it means the hologram only needs to be visible from about 1-2 degrees;
This reduces the resolution needed from a display device down from over 100 million pixels for something like a 30 inch display, to more like 3-4 million, which is doable with existing tech.
It also lowers the processing requirements down to about 3 terraflops, making it possible to do in realtime with high-end 3d hardware, instead of some kind of insane super-computer setup.
I don't expect to see that commercially available for a few years yet, but it sounds a hell of a lot better than all the varied things we have now.