Why??? Because you can…
http://www.furrygoat.com/PermaLink.aspx?guid=2b11ceea-d0e4-4899-87f5-2a52e36775c0
Steve Makofsky describes how he got MacOS X running under PearPC, a PowerPC platform emulator. I don’t have MacOS install disks, but I might try running a PowerPC linux on it…