Here are all the components I own:
Main hardware:
AMD Athlon 64 x2 4000+ (65nm "Brisbane")
Abit KN9 Ultra
4GB (4x1GB) Elixir DDR2-800/PC6400
CoolerMaster Praetorian case
CoolerMaster iGreen 430W PSU
MSI Geforce 8600GTS (NX8600GTS-T2D256EZ-HD)
Yamaha SW1000XG soundcard
Input:
Razer Diamondback "Plasma" mouse
Saitek Eclipse keyboard
Wacom Volito 2 graphics tablet
Canon N650U scanner
KWorld DVB-T 380U TV tuner
Output:
NEC 1770NX 17" LCD monitor (primary)
DGM L-2041W 20" LCD monitor (secondary)
Canon Pixma iP3000 printer
Storage:
Samsung SP2504C 250GB SATA hard drive
Western Digital 640GB Caviar "Blue" WD6400AAKS
Pioneer DVR-215DBK SATA DVD burner
Networking/Comms stuff:
Elsa Microlink 56k Fun USB modem (still comes in handy sometimes!)
Linksys WRT54GL (with Tomato firmware)
Some cable-modem or other
OS:
Windows XP SP2
Just about every other OS in existence, via VMWare and QEMU
Some pictures of the system:

The large hole in the side panel was to allow the V1-Ultra heatsink on my old graphics card to fit, otherwise it was too wide for the case. The other holes are purely decorative.
And here are some images of our file server:

The PSU fan is the only fan in the system. It's positioned directly above the CPU, cooling it nicely

The front is decorated with some blinkenlights, allowing useful information to be seen without the need for a monitor.


