Linux distributions, in graphical form

Thanks to Steve Bush, our Technology Eduitor, for flagging this amazing graphic. Ever wondered what a document of Linux distros would look like, in graphical form?

Check out the Wikipedia page for List of Linux distributions. Specifically, check out http://upload.wikimedia.org/wikipedia/commons/8/8c/Gldt.svg

And there's anoher one for the Debian family tree.