This, and others like it from Supermicro and Asrock, are what I am interested in. I'm not so sure this is what Dave is looking for. These are not sub $100 boards by any stretch. I happen to like IPMI serial over LAN and don't really want to live without it. I built a Habey fanless chassis and a Asrock board system with 16gb of RAm a few months ago. The Habey fanless chassis is pretty nice except that it smelled awful. They have an external inline power brick with a barrel connector that is converted to atx by a small board in the chassis. This way I also get to run Debian without worrying about filling up some small flash.
Dave, are you looking for something for the masses?
--FC