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.
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.