Main rig:
Mac Pro 2.66
7300GT card for now
20.1" LCD

Gaming box:
D805
1GB DDR2 667
74GB Raptor
7900GT
19" LCD

iMac (used at work -- hey won't buy me one ):
20" G5 2.0
2GB DDR400

Laptop:
MacBook 2.0 Core Duo
1.25GB DDR2 667

collecting dust:
Dell D600(1.86GHz)
Powerbook Ti667
many, many iPods