Built this computer a while ago the same day I got my first credit card
Windows Vista Ultimate Edition
AMD Athlon 64 X2 5200+ @ 2.6 GHz
Asus M2N Sli Deluxe Mobo
2 GB High Speed RAM (not sure of exact speed, forgot)
Nvidia GeForce 7600 GT w/ 256 MB memory
Onkyo 7.1 channel soundcard with a 5.1 channel logitech surround sound system (insane Bass) and sennheiser headphones
700 GB of HDD space... I had 1.1 TB but my HDD failed recently and I lost 400 GB of important stuff
And some random add ons... TV card, IR receivers for remotes, bluetooth, additional sound card.
I use it mainly for web browsing, some gaming and, most importantly, as Media Center PC. I have it hooked up to my 52" HDTV via HDMI.
Only downside... it's a fricking heater. It makes my room hot. I wonder if watercooling would possibly eliminate that issue.
Going to buy a laptop soon. Nothing special, I just want a nice little 14 inch screen with decent performance for web browsing, home work, etc.