I only own one 3D movie, The Avengers. I mainly think 3D is a gimmick but I wanted to try one out at home. I thought it was mostly fun but the model? (CGI?) of the Shield ship looked really fake in 3D. By the way, I used THX Cinema and I thought the light level looked great in a dark room.
I also wanted to comment on PQ in general. We are definitely a picky bunch because the differences in picture quality between the ST, VT, ZT and Sammy F8500 would be lost on most people. Even good backlit LCDs look pretty good these days. Of course, I got a ZT60. If that hadn't worked out, I think I could live with the Sammy. I liked the PQ on my old 50" V10 just fine. This is a nice step up for me but not having seen them side by side, the only thing that really jumps out at me is the size difference.