He was also Police Chief Thad Green in the Mathnet segments of Square One TV. He only appeared a few times, but was unmistakable when he did. He also participated in early test footage for what would become Sesame Street. Film footage of him reciting the alphabet, in trademark James Earl Jones diction, was one of the things they used to research young children's response to educational programming.
I loved Mathnet and Mathman segments. Still remember the episode where they figured out the hill a van drove up because of the tilt of the water in a glass.
I completely forgot about Mathnet for many years - I'm not sure where I even saw it; My family didn't even have a TV (and I was too young anyway) for it's run. It was a delight when I discovered that my fever dream of a dragnet parody was in fact real. Great show, very funny, and good education.
