Funny... I wrote a paper in one of my PhD classes on the development of glasses free 3D TV's and the problems of the current 3D TVs in the market today. I even discussed how it was Avatar that ignited the interest in this technology.
I bought a big screen LED TV earlier this year and specifically avoided getting one that was 3D (which was fucking hard to find as a 55" Samsung ) because I'm not a fan of the technology as is implemented today.
Link to said paper: http://ahmedelattar.com/3dtv.pdf