Don't get me wrong that is one sweet ads rig but here check this out
http://www.overclock.net/g/i/1830152/slinky-supercomputer-slinky-pc/sort/display_order/
This fool has taken extreme pc builds to an entirely different level... His rigs start at like $6000 and go up to $18,000. I mean holy crap batman 4 videocards