3D is probably inevitable if you think about it.  Television has room to evolve until it reaches the limits of a pair of healthy human eyes.  That includes factors like color, resolution, frame rate, and depth perception.<p>Most 3D tech seen today is in its infancy.  There isn't much content for it.  You still need to wear 3D glasses for most of it (those are probably going to get tossed before 3D takes off in the home - it's not natural enough to use).<p>HDTV took a while before becoming mainstream.  We were hearing about it back in the mid-1990's.  There was no content at first, TV sets were expensive, certain standards didn't solidify yet (Blu Ray, HDMI to name a few), etc...  It didn't start taking off until recently.<p>Right now we're seeing the same for 3D.  A bunch of different standards, all in their infancy.  It might take 5-10 years before it starts becoming mainstream, similar to HDTV.  The 3D standards you see today may end up being toys for rich people only to be replaced with something better shortly after, like Laserdisc's were before DVD's came to be.<p>Beyond 3D TV running at 240fps at 20K x 10K pixels, what else is there?  Probably something that links directly into your brain, bypassing your eyes (and ears) entirely.  A few decades away from that I'm afraid though.  :)