I just built another PC for myself..
The backbone is a MSI P6N SLI Platinum LGA 775 Board, doing all the work is an Intel Q6600 Quad Core Proc cooled by a Arctic Cooling Freezer Z Pro , memory is handled by 2 Gigs of Coarsair XMS2, throwing out video is an Vanilla EVGA 8800GT with an Zalman VF900-CU cooler Flashed to 680 Core, 950 Memory.
Write up on this is here
Running my OS is a 74Gig WD Raptor with an HDD cooler, and my storage is a segate 750Gig 7200.10 also with an HDD cooler. All Powered by a Rosewill RP550
All this is stuffed inside A Thermaltake Saprano...
Built on a pool table, perfect non conductive surface
All thrown together, still messy
Cover on, ready to roll