The Hanna-Barbera Saturday morning cartoon Scooby-fourth Doo's incarnation is the original thirty-minute version of Scooby-Doo and Scrappy-Doo. A half-hour show, it aired on ABC for one season beginning on September 22, 1979. There were a total of 16 episodes made. Last Hanna-Barbera animation to employ the studio's laugh track was this one! There are replays of the show on Boomerang, a classic Cartoon Network channel