Engadget reports on Origin PC's The Big O, which features a liquid-cooled gaming PC and XBox 360 all in one massive enclosure.  For $7,699 you get an overclocked Intel i7-930, two nVidia GTX480 cards, 6GB memory, 1500 watt power supply, dual SSD's, and a liquid-cooled Xbox Slim.  If that isn't enough for you, they also have a ZOMG $16,999 version that will guarantee your gaming supremacy and/or bankruptcy.