Scooby's All-Star Laff-A-Lympics was a two-hour programming block of Saturday morning animated series produced by Hanna-Barbera Productions. Running from September 10, 1977 to September 2, 1978 on ABC, the block featured five Hanna-Barbera series among its segments: The Scooby-Doo Show, Laff-a-Lympics, The Blue Falcon & Dynomutt, Captain Caveman and the Teen Angels, and reruns of Scooby-Doo, Where are You!. For the 1978–1979 season, the show was reduced to 90 minutes and re-titled Scooby's All-Stars. This season aired from September 9, 1978 to September 8, 1979 on ABC. Each week's program included six cartoon segments: ⁕Captain Caveman and the Teen Angels: Comedy/mystery show about three teenage detectives and their companion, a prehistoric caveman superhero thawed from a block of ice. Sixteen episodes were produced. ⁕Laff-a-Lympics: Based on Battle of the Network Stars, this series featured 45 Hanna-Barbera characters, including Scooby-Doo, Yogi Bear, Mumbly, and others competing in Olympics-styled events. Thirty-two episodes were produced. ⁕The Scooby-Doo Show: Comedy/mystery show about four teenage detectives and their talking dog, Scooby-Doo. Eight first-run episodes were produced for the 1977-78 season, with 16 from 1976-77 rerun following the final first-run episode. Two of the new episodes, as well as two others from 1976–77, feature Scooby-Doo's cousin Scooby-Dum as a recurring character.