In 1980, WMTV in Madison, Wisconsin produced this feature about early personal computers and the geeks who loved them. I enjoyed the discussion of The Source, which was the first online experience I ever had.
George Martin, who posted the video to YouTube, writes: "About halfway through the video there is a segment filmed at my home showing how I had programmed a Cromemco Z-2 computer to control lights and appliances."
(Thanks, UPSO!)