Mythological Family Tree

I've always thought it would be neat to try and map out a family tree for the Greek gods and goddesses.  I had envisioned making my students do it, but as it seems that I will not get the chance to teach a mythology course for a while, I just put it on hold.  But then I started stumbling on the web (it is great, you need to try it - really makes wasting time on the Internet much more efficient - www.stumbleupon.com) and stumbled across one already done.  Now, it is too big to show here, so click the image and go see the original.