I've got a mid-tower PC. Nicknamed "Reconcilliation" (yeah, yeah :P)...
AMD 3500+ (Winchester)
evga NF4SLI mobo
1 GB (x2 512MB) OCZ ELPE running in dual channel.
XFX 6800 GS (485/1.1g... O/Cs to about 536/1.2 w/auto o/c... haven't done manually, but probably can push higher.)
x3 HDs -
x1 Maxtor 80GB IDE (crap, but hey, first HD)
x1 Seagate 80GB SATA150 Barracuda 7200.7
x1 Seagate 80GB SATA300 (or SATA2) Barracuda 7200.9
Audigy 4 (non-Pro)
17" Samsung SyncMaster 710n
MX1000 Mouse
Logitech G15 Keyboard
Logitech Z-640 speakers
NZXT Guardian case (hope to replace soon w/ full Thermaltake tower)