My system is a couple years old mostly, wanna upgrade but can't justify it yet:
Case: Fractal Define XL
Motherboard: MSI P55A-GD55 (I think)
Power Supply: A good one that was enough (XFX XXX 750 watt modular as I recall)
Processor: Intel Core i5-750
CPU Cooler: Zalman (CNPS9500 or similar I think)
Memory: 8GB (2x4gb) of memory that was on sale and good (Think was Mushkin)
Graphics Card: Power Color ATI 6950 2GB (loud as hell, don't buy it)
Hard Drive:
OS and Some Choice Games - 2 x OCZ Vertex 60GB SSD's (Originals) in Raid 0
Filer backup and other games - 1 x Western Digital Black 2GB Hard drive
External Hardware:
Keyboard: Logitech G15 Gaming Keyboard
Mouse: Logitech G500 Gaming Mouse
Desktop Speakers: Old Altec Lansing 5.1 Surround Speakers (No idea on the model, they're well over 5 years old)
Monitor: Dell Ultrasharp 2407wfp 24" LCD Display
Coffee: Lotsa sugar and cream, hate the taste, but keeps me awake for more games