Here is a page dedicated to previous custom system builds I really liked

Armorman:
IMG 3784 100x100 Custom Computersarmormancd 100x100 Custom Computersarmormanside 100x100 Custom Computersarmormaninside 100x100 Custom Computers

Built in 2006
Specs:
AMD Athalon X2 6400+ 3.2ghz
ASUS M2N32 Wifi Edition Mainboard
2 x BFG GeForce 7950GT 512mb
2gb PC2-6400 Corsair XMS2
2 x 250GB SATA HDD’s
2 x Lite-On DVD/RW with DriveStealthed™ Bays
Antec 650W Modular Power Supply
Thermaltake Armor Full Tower ATX Case
Thermaltake 140×280 Watercooling set
Swiftech Waterblock
74W Peltier Termoelectric Pump (CPU Idles at 1°C from this)

Greenmachine:
Greenmachine0Greenmachine1Greenmachine2Greenmachine3
Greenmachine4Greenmachine5Greenmachine6Greenmachine7

Built in 2007
Specs:
AMD Athalon X2 4200+
Abit K9N Mainboard
nVidia 7900GTX 512mb
3gb PC3200 Kingston DDR RAM
3x 500GB SATA HDD’s
Lite-On 52x CD/RW drive w/ DriveStealthed™ Bay
ASUS 20x DVD/RW w/ DriveStealthed™ Bay
Xion 600W Modular Power Supply
Logisys Fully Arylic UV Green Case
Coolermaster Orb 3D CPU Cooler
Luminglas Lighting Feature


NES System
NES Compy 0NES Compy 1NES Compy 2

Built in 2007
Spec:
Via C7 1.2gHz Processor
Via NS7 Mainboard
1gb PC3200 DDR Ram
Sony IDE Slimline DVD/RW drive (not shown here)
120W Pico PSU
Original Nintendo Entertainment System Casing (Taken from a broken NES)