This armless guy plays guitar with his feet as he sings. I haven't found out where it was filmed. Hit Play button or follow the link below to watch the video.
Update 1/12/08 by Alex: It's Mark Goffeney, filmed in Balboa Park, San Diego - Thanks Hari and Eric!
I've seen him there a number of times, right by the crazy opera lady with a tambourine. When's somebody going to put HER on YouTube?
On a related matter, now I know it's possible to play with the feet, and knowing that some dude played 2 guitars at once, it should be technically possible to play 3 guitars at once.
Wow. I'll sleep better tonight.