Current build:
Intel E8400 @ Stock
ASUS P5Q-E
OCZ 2GB DDR2 (2x - total 4GB)
ASUS GeForce GTX260 SP216
Western Digital 320GB SATA II
Crappy 20$ 550W PSU (works wonders!)
Pioneer SATA DVD Burner
ASUS Vento Case (a cheap small model. I had to cut out some steel inside to fit my GTX260)
Still runs almost everything on Ultra-High, even if it's a single GFX-card system.
Probable future build (might change something around):
Intel Sandy Bridge EP with LGA 2011 (still dunno what model, as they're yet to be released)
ASUS hi-range LGA2011 Motherboard with UEFI bios (I totally want one)
4x 4GB DDR3 (total 16GB, I guess they'll be enough)
Good SSD as boot-drive
1TB SATA3 drive for storage
GeForce GTX560/565 (or whatever mid-high GFX card they'll get out in Q4 2011)
Modular Powersupply and an Antec (or something high-end) case if I feel like wasting money on something non-essential.
I can't wait for the LGA2011 Sandy Bridges to be released