While holographic displays are still years (decades?) away at the earliest I expect, the reality of movie theater like 3D as a standard in the home is going to be here within 12 months I fully expect with the adoption of an active shutter system from Blu-ray Disc as a standard.
Full 1080p, full color, not grey polarized glasses like many theaters, but an active lcd shutter system which allows the TV to be far less expensive and is compatible (or should be) with lcd, plasma, and all projection technologies without a special screen or anything.
If you have been to the theaters and like the effect of Up or Avatar, then this is exactly what the expectation and the good reviews at recent trade shows has been saying about the 3D spec. being used by Blu-ray.
A number of theaters in the USA and world currently use active shutter 3D technology.
There's a fairly long discussion of Blu-ray and 3D over at High Def Digest...
http://forums.highdefdigest.com/hig...-do-you-think-3d-will-propel-blu-ray-top.html
which people may find interesting, and includes some links and a bit of research I did on the matter. (AV_Integrated there!)
Would I wait? I would at least wait to see what CES is going to present in the next couple of weeks, but I think that late 2009 will be when we start to see the displays come to market and they might have a couple hundred dollar premium attached to them.
But, they should NOT be the weak point of 3D viewing at home. The shutter glasses will be, and the requirement for a 3D Blu-ray player (if you don't own a PS3) is likely to be the significant hurdle for 3D on Blu-ray.
Image quality should meet a lot of the quality levels as seen in theaters currently, which is pretty nifty. Definitely a LONG way from the red/blue glasses of years gone by.