Which is neat, if you're in an environment where keeping your computer open to the elements is acceptable I wouldn't try this with young children.
But, as always, I do like.
During college, friend-of-the-blog Patrick had a working computer stuck to his bulletin board. The power supply sat on a nearby shelf, I think, but otherwise, it all hung off the wall.
I'd be curious about RF interference in the surounding area, but this looks like a neat thing.