Right now I'm running an AMD 64 3000+ overclocked to 2.2G, have 2gig of GSkill RAM, an Asrock ULI chipset motherboard, an ATI 1800XT video card, and I have 2 120G Western Digital SATA drives in RAID0 along with a Pioneer DVD burner.
I plan to upgrade soon to a rack mount case and an AMD 5000+ Black Edition cpu, I haven't nailed down what else I'm gonna run in the new system yet though.