This user-submitted video over on Game Trailers is somewhat clumsily entitled "True 3D Future Gaming", and immediately raises the topic of whether holographic projection systems will ever feature in our gaming lives. I've been seeing this kind of stuff turn up at the prototype stage for a few years now, and they always make me think of the 3D adverts you seen in science fiction, but never of gaming. I'd suggest that these things might one day make impressive static displays and holo-billboards, but might never be any use for interactive media. We're much more likely to make use of smaller, thinner flat screens.
You'll always be three-dimensional to us, Game Trailers.