Sightings of macosx 10.4.4 on plain Intel hardware
Maxxuss has released a first set of patches which apparently allow macosx to run on a generic x86 computer (but SSE2 is required).
So, either Apple has been technically unable to make their OS crackproof...or they didn't really want it to stay locked to Apple hardware...
Via the OSx86 project.
Update: In the meantime, maxxuss has got a new new blog.