Pardon the mess on the desk, I didn't bother cleaning it.
Dell XPS 710, 2.4ghz dual core processor, 4gig RAM, 250gig SATA HDD, 120 gig IDE HDD, 16x DVD burner, Nvidia GeForce 8600GTS. The sound card is an OLD SoundBlaster Live Platinum that I've had for about ten years, I love it, it sounds great and supports surround sound, why upgrade?
Computer's two years old, but it'll run anything I've encountered very well, and the motherboard will support a quadcore processor and up to 8gig of RAM, so I'll be upgrading this machine for a while.