ExtremeTech has written an article on building your own Intel x86 processor based Mac system.
So if OS X will already run on the Intel platform, and all Intel-compatible stuff is more or less interchangeable, doesn't that mean you could get an early build of it running right now on a PC? You'd want to separate it from your main PC, of course, but the potential is certainly there. There's only so many times you can set up a dual-boot Linux system before it gets boring, so why not try something different? Besides, OS X looks sooo cool. Not so fast, Sluggo. Continued...Read more over here.