I was reading this article over at Snazzylabs just now about building a Hackintosh computer and it got me thinking about actually building one. The draw of building a quite powerful Mac at a fraction of the cost of buying an Apple product intrigues me. I'm not 100% sure about the whole buying parts thing, but there's a pretty good buying guide here for all types of Hackintosh varieties (these are the installation instructions).
Anyway, watch the video below. The computer enclosure isn't as pretty, sure, but cost to performance, this is a great build.