My PC
Primary Desktop: "Aardvark VII"

Windows Vista Ultimate x64
Intel Core 2 Quad Q6600 CPU (2.4GHz stock) @ 8 x 420MHz = 3.360GHz, Arctic Cooling Freezer 7 Pro cooler
DFI LanParty Dark P35-T2RS motherboard
4GB (2x2GB) G.Skill DDR2-1000 RAM @ 1078MHz
512MB MSI Radeon 4850 graphics
320GB Seagate 7200.10 SATA II HDD
Sound: Onboard 24/192 optical >> Stello DA100 DAC >> Restored McIntosh MAC1500 / Meier-Audio Corda Headfive #150 >> Sennheiser HD-595 headphones / Energy C-100 speakers
AVerTV Combo PCIe HD/Analog TV tuner w/ remote
LG GSA-4167B DVD burner
Samsung floppy drive
Enermax EG375P-VE 370w power supply
Dell 2005fpw 20.1" 8 bit S-IPS widescreen flat panel monitor
Canon Pixma iP5000 inkjet printer
Logitech MX Duo keyboard and mouse w/ belkin gel mousepad
Ultra Aluminus case
ThinkPad Z60t Laptop: "Pineapple II"

OS: Ubuntu Linux (latest)
Intel Pentium M 750 (1.86GHz, 2MB L2, 533 FSB)
1GB DDR2 RAM (2x512MB)
80GB 5200RPM hard drive
4x DVD burner
Intel 4965AGN 802.11 Draft N wireless (upgrade, modded bios)
14.1" 1280x768 widescreen
Intel GMA 900 graphics
R.I.P. HP Omnibook 6100. May your fried motherboard, two dead hard drives, failing screen inverter, defective keyboard, humming noise, etc. rest in many pieces in a box.
Older systems:
Systems 1-3 were given to me by my dad when they became outdated and replaced with a new system. For example, I acquired System 1 when he bought what would later become System 2.
System 1:
Packard Bell Pentium 90Mhz, 8x CD-ROM, Sound Blaster sound card, other specs unknown
System 2:
Compaq Pentium 200Mhz, 6Gb Quantum Bigfoot HDD, other specs unknown
System 3:
IBM E5U Pentium 2 350Mhz, 224Mb RAM, 8x DVD-ROM, integrated ATI graphics, 8Gb HDD
System 4:
Self-built AMD Athlon XP 1600+, 128MB DDR RAM, ECS K7S5A motherboard, NVidia TNT-2 Pro, 8Gb hard drive (system built on a $230 budget)
System 5:
Self-built AMD Athlon XP 1600+, 256MB DDR RAM, MSI KT4V-L motherboard, NVidia GeForce 4 Ti 4200, 40GB hard drive
The venerable Aardvark 6:
Self-built AMD Athlon 64 3200+ (939 90nm), 1GB Dual Channel DDR RAM, MSI K8T-Neo2 motherboard, NVidia GeForce 6200 (128MB), 320GB hard drive