Well, it's not that straightforward installing a PC laptop with Mac OS X. He will have to hack the Mac OS X in order to install it and after that, there might be driver problems.
Well, the thing about using an Apple for me is a total experience... hehe... it's how the hardware and software are designed to work together, like for eg. the iMac, beautiful design and great OS, why bother to buy a PC and hack so that you can use Mac OS X??