I built this in march of 2001...and I'm still using it. (with some upgrades)

Antec LanBoy case w/ 300W p/s
Pentium III @ 1GHz
512 MB ram
80GB + 40GB Maxtor PATA HDs
Soundblaster Audigy 2
GeForce 3 ti500 64MB
Sony 4x4x24x24x32 DVD±RW
Mitsumi 4x4x24 CD-RW
Samsung 17" LCD @ 12ms response.
HP printer (new) and scanner (semi new)
Logitech 5.1 surround @ about 70 watts 1KHz RMS (not very good, but certainly sufficient for now)

I'm looking at possibly building a dual Opteron/Xeon machine this summer.