There Be Dragons Here
These guys here have created a PowerPC emulation that runs on either Linux or Windows. That's right, you too could be running Mac OS X 10.3.4 on you very own Linux or Windows machine. Of course, running may be too strong a word to describe software emulation that turns a 3.0GHz blazer into the equivalent 77MHz Tiger wannabe. But hey, as the guys say, it's still cool that it runs at all.