You know Star Trek's holodeck? If not, here is Star Trek's holodeck. Anyway, once the property of science fiction, some advertisers have actually built one for a PlayStation 3 commercial.
As you'll see, there is no post-production work being done on the footage. All the effects are being done in the room, using 3D projection mapping and a PlayStation Move controller stuck to a camera. There is also Starscream. And men in lycra.
For those wondering what the Move controller is actually doing, the ad's creators say:
By attaching the PlayStation Move to the camera, we can track projections to screens in real time, enhancing the effect of spatial deformation and false perspective on the projections and allowing viewers to look round (virtual) corners, bend walls, create a hole in the wall, or remove the walls altogether to reveal vast expanses of virtual worlds.
I'm a bit dubious as to their claims of it being "one take", as there's a few instances where you see him "twitch", but other than that, it's all very impressive.