A few years back a couple friends of mine and I were up late talking. Somehow we got to the topic of TV shows we watched when we were kids. One that we remembered was Square One and in particular Mathman. I remembered that conversation tonight when I was listening to the Relevant Podcast and they talked about Mathnet on Square One. Did a quick search and, thanks to Wikipedia, I came across a site with clips from the show.
For your viewing pleasure, I offer up a clip of Mathman.