http://pearpc.sourceforge.net/about.html
http://www.osnews.com/story.php?news_id=7085
PearPPC open source emulator runs Mac OS X on x86 hardware.
1/50th the speed of the host CPU, but it does indeed work.
This is a great day.
PearPPC
Moderators: Cat_7, Ronald P. Regensburg, ClockWise