MB... I haven't a clue what motherboard it is, but he mentioned it is one of the only SLI boards that supports dual 16x? Sound right?
CPU... an x2 4800+ 939 chipset
RAM... 2GB of RAM... he wanted 4GB, but I guess the RAM is made specifically for that board? Maybe he'll buy another 2GB later?
Video... 2x XFX GeForce 7800 GTX's w/ 512MB RAM
HDD... 4x 10,000RPM Raptors..

Case.. I think he said a coolance case
Other... 1GB Video RAM..?
I'm sure he has some killer optical drives and sound, just didn't hear what he got.
Overkill? I think so. Extremely tight system? Indeed!

I surely wouldn't spend $6,000 on a computer... I'd spend $2,000 tops probably.