Also just so nobody misses it in the description, there's a whole page with many photos and an additional 1 hour video going into more details than the video on YouTube: http://web.cecs.pdx.edu/~harry/Relay/index.html
Links should have a 'nerdsniping advisory' tag.
Seriously: I was watching that feeling myself get the "of course I should have this on a wall in my house..." feeling.
It's a good thing the only blank wall in my work room doesn't have any outlets near it.