Since the actual linked page contains video links that don't work, here's Dave Griffith's blog of Scheme Bricks posts including audio, some images and videos : http://www.pawfal.org/dave/blog/tag/scheme-bricks/
It's a visual programming overlay over Scheme, but the videos don't work, and the hopefully useful wiki link is broken. Kind of useless page...
Livecoding is awesome, and one of the coolest resources when I started getting interested in it was pawfal.org and Fluxus. What an interesting way to represent s-expressions.