It is possible already. And here's the proof. A step by step description of how to install your own OS X on your regular PC system (provided you have an Intel x86 CPU).
Pretty cool! If only I have a second HD in my laptop
12-09-2008: SymfonyCamp 2008
13-09-2008: SymfonyCamp 2008
30-10-2008: International PHP Conference 2008