 The pilot, televised on March 28, 1970, starred Worley, Allen and Tom Smothers, who was replaced with Winters when the show became a series.Based on Buxton's travels as a comedian (and later, as host of the ABC series, "Discovery"), which took him on tours to various factories, "Hot Dog" explained, in a humorous manner, how we do things (such as snore) and how things were made (such as the eponymous hot dogs and their buns, plus condiments like mustard).Seventy topics were covered during the course of this series, which lasted thirteen episodes and rerun the rest of the season.