Basically just an Xbox 360 and my childhood Gamecube and Wii. I used to have a PS3 but it got sold off at some point. Would love to get an RS/6000 at some point to play with... or a Thinkpad PS.
Apparently at the offices someone I know works at, they have Freescale-based PowerPC desktops for... something.
Now for the fructiferous power:
2x Power Macintosh (one Sawtooth, one Mystic, both G4s @450), 2x iBook (one G3/900, one G4/1.42), 1x iMac (G5, 1.6GHz).