Ah, the once mighty Power Mac G5. It used to be the envy of film editors and art designers everywhere. With a 1.6 GHz CPU, a whopping 256MB of RAM, and an 80GB hard drive, it was once the tower-iest of PC towers.
Actually it's just the case doing the grating -- you have to admit, with all of those tiny holes for ventilation, the case works pretty well. It does make a mess, though, and there's quite a bit of cheese still left on the unit. It may not be able to run 10.6, but the old G5 will spruce up your salad if you so choose.