Here is my basic build, it's several months old.
http://img337.imageshack.us/img337/2194/newbuild.jpg
Asus P6X58D-E mother board
i7 950 processor
6 gigs of corsair triple channel 1666 RAM
750 watt corsair modular power supply
EVGA 470 superclocked
corsair water cooler for the CPU...