When you play enough games, you will start to notice how many of them feature toilets. This is the Doom 3 one. I hated it for what it did to me (frightened the heck outta me).
Here are a few more from Fresh99 (via Unscathed Corpse).
In other news, Engadget had at look at the alleged Xbox 360 power supply, and damn that sucker is big. As one blogger said, maybe they are hiding part of the Xbox 360's processor in there.