If you can build a basic Unix system then you can make OSX boot on a PC. Or you can cheat and download the highly illegal copy of a prebuild OSx86 but I wouldn't trust it.

I'm still trying to find the perfect CPU. I did how ever got a buddy of mine to install OSx on a 200GB drive with his new MacPro. The drive has 3 partitions. 1GB for the boot partition (vfat), 100GB for the OS and what not and 99GB for backups. Right now I have it on a crappy PC to work on the bootloader. I know 1GB is a bit much for the bootloader but I might toss on WinXP for dual booting.
To live is to let die