Mac on your own
For those who love the PPC arch, here is a rather light weight article from TechTV about building your own.
Re:Mac on your own
Yeah I was gonna build one and get rid of my cube but I was like, naaah. I put the dual chip and bumped my RAM up to a gig. Here is the link for the dual chips.
I have the dual 800Mhz. Thing is sick if you run Yellow Dog or OS X. It's all my little cube can handle without putting a huge fan in it.