The OLYMPICS will be broadcast in 3D
That will drive adoption
Next gen consoles will also
AND .. most important to remember if you are considering gaming in S3D:
Passive S3D SUCKS (except for cheap, entry-level - and especially for the kids; glasses are dirt-cheap) but the 120Hz displays are WORTH IT for fast paced shooters for 2D - never mind playing in 3D, just consider S3D a bonus. Playing in 2D on a 120Hz display is SO much clearer; you have to see it for yourself
It blows my mind that there are those who diss FXAA but tolerate the Blur-O-Vision fest on their 60Hz monitors when playing shooters.
And after you get the 120Hz display, the active shutter glasses are then relatively cheap
Finally, Nvidia's 3D Vision 2 is far ahead of AMD's partners like TriDef in regards to support. Actually, there is no comparison. HD3D doesn't have the support from AMD that Nvidia gives to 3D games.