That's awesome. If I had a job I'd try to make it fun, too.

It's like he's hearing music in his head that no one else hears.

Also, this was in the related videos, but the quality is too poor to tell if it's the same guy. Dance moves sure seem to suggest it: http://www.videosift.com/video/Amazing-Sign-Guy

There can't be two of these guys.

But what's he selling - jigsaws?

See the bottom of the Nov 17 post here:
http://jigsawsworld.typepad.com/garthsworld/

Very cool, and also, way more interesting to see on the side of the road than the usual sign holder who wears an ipod and just wiggles the board a bit (as I'm sure they're told they can't be still) while looking like they'd rather be dead

I don't know what they are paying him, but it's probably not enough!