My main problem with 3D videos up until this day is the so called "paper figurine" effect. Or at least I'd like to call that.
I was late night shopping a couple of hours ago, and took another look at the LG 3D TV. Certain stuff is with specific depth perception, no doubt. But the background is still a flat image, or sometimes figures in the foreground.
I've seen that with AVATAR 3D (you can find trailers on YT where you can the "crosseye" technique - which strains the eyes, but works for presentation purposes). Here you can clearly see the embosed effect around actors, everything else is like 16bit games Parallax Scrolling Effect:http://www.youtube.com/watch?v=8RZRE0M3Hvc
Another thing that is concerning me a bit with the recent Godzilla trailers... maybe they don't want to blow this or something but... people want to see Godzilla use his atomatic ray. Yet we only saw Godzilla scream, mostly frontal, no other attacks, no fights, just stomping around. Granted, makes it look more menacing. But I'd like to know if they pull if off right. Unlike what we saw with... er... Zilla.