The Knoppix MIB ppc is really good considering it's in alpha stage.
I have run it on a 233 iMac and a G4 cube.
All the hardware and peripherals are recognized, and I was most impressed at the sped and peripheral recognition on the G4, I have lots of firewire drives and burners connected to the cube.
If either person needs hardware testing done for their ppc builds, I will gladly volunteer my time and equipment.