It's quite bitter when OS X Intel is already hacked before it's actually available:

MacBidouille reports that the Apple Developer kit version of Mac OS X x86, released to developers in early June, has been "hacked" to work with a PC notebook. The report includes a video showing Mac OS X x86 booting natively on a Pentium M 735-based notebook.

And this despite TPM and similar tricks. Maybe Apple should switch back to PowerPC after all, which is not more secure, but at least there's no alternative hardware at bargain prices like with Intel.