I saw that same 3D display at BB today, I think.
One of the scenes had a car racing down the track. It looked slightly better than the last 3D demo I saw, which was some lame flying taradactal things. There was a sense of depth, but like the others said I agree that it somewhat was like a "pop-up book"---just different layers of 2D to create a 3D effect. And I agree that it needs to be on a bigger screen than that sub-50incher they had in the store. As such, it wasn't immersive at all. Rather, it was almost like looking out a window. Regardless, I still thought it was kind of cool despite it being very gimmicky. Besides, it's probably the best gimicky 3D we've had at home yet. Though, it's maybe not yet any more realistic than, say, good regular 2D HDTV.
I don't really care much about 3D, and I'll probably never buy a 3DTV unless it becomes the standard for all TVs. But, if I did happen to own a 3DTV capable set, I could see maybe watching the occasional novelty movie or playing the occasional novelty videogame in 3D. I think the sensation was too weird to watch a lot of it, though.