Antec ISK110 VESA Case
 

If you are planning on building an uber-tiny mini-ITX rig, the Antec ISK110 VESA case might be something you are interested in. The Antec ISK110 VESA is a tiny case for Mini-ITX motherboards, targeted to users who want a small computer that won't take up any space on their desktop. In fact, the ISK110 VESA can be attached to the back of your video monitor, so it won't take up any space on your workspace and it will also be hidden from view.

http://www.hardocp.com/news/2012/06/...110_vesa_case/