A couple of years ago
Someone managed to load a MAC O/S into a PC, it took a few hours of twiddling, it wasn't very stable, and some of the periphials didn't work to well.
Hmmmmmmmmmmm, y' know, that sounds exactly like the way Windows already is.
(Go LINUX!, got an older 'Hat disc, put it on an old 500MHTZ PII box, takes some getting used to and you have to geek it. But it has promise.)