I'm curious about JewDaddy's results, too, especially in that same Prometheus scene. I also tried a different player and the other pair of PS3 3D glasses I had, but the results were the same. Perhaps the HX850 just has some crosstalk to deal with. I went back and re-read reviews of the TV and they all mentioned crosstalk. At the time I just thought it was the pair of glasses they used (the official 250 or Titanium sets), since none of them were using the PS3 3D glasses which were said to reduce crosstalk and tilt/color issues due to a polarizing filter the others lacked.
That visual artifact is never enough to ruin the movie, but I'm the kind of person that looks for and spots errors. And as much as I want a perfect 3D presentation, it doesn't sound like that quite exists yet? My other choice was the ES7100+ line of Samsung TVs. According to you, cmay, they have their own distracting 3D issues.
2D is still where most of my time is going to be spent, and damn does the HX850 have a good image. I've been hooking my computer up to it for PC gaming, too. It makes those games come to life in ways my monitor could never do. I especially like Motionflow enabled when playing PC games. So smooth!