My contribution!
It's not a gaming machine, so nothing fancy with the graphics:
Case: Alpine EZ-Cool
Case fans: front 8cm (included free with PSU) with Acoustifan gel gasket, rear 12cm rear (Akasa Ultra Quiet) with Acoustifan gel mounts
PSU: HiPer Type R 480W
Motherboard: Abit AX8 3rd Eye
Processor: AMD Athlon 64bit 3200+ with Nexus AXP-6400 fan
Memory: 2 x 512Mb Crucial PC3200 DDR
HDD: Maxtor DiamondMax 10 300Gb
Graphics: Sapphire X300 SE 32M (with DVI for monitor)
Optical Drives: LG GSA4163 DVD writer, 52x Lite-On CD writer
Additional: Silver Floppy Drive (with rounded cable), Coolermaster Cooldrive 6
All of this is matched up with:
Viewsonic VP171S-2 Monitor
Creative I-trigue 3300 speakers
Logitech cordless keyboard and rechargable optical mouse
Logitech QuickCam Zoom webcam
Netgear DG834GT wireless router
Western Digital 160Gb Media Center