1979 Scooby Goes Hollywood Shaggy and Scooby-Doo quit their Saturday morning TV series in pursuit of Hollywood stardom. Credits Director Ray Patterson Producers William Hanna , Joseph Barbera , Don Jurwich Writers Dick Robbins , Duane Poole Composer Hoyt Curtin Cast Casey Kasem , Don Messick , Frank Welker , Heather North , Patricia Stevens , Ginny McSwain , Marilyn Schreffler , Joan Gerber , Rip Taylor , Michael Bell Studio Hanna-Barbera Cartoons Genres Animation Comedy TV Movie Posters 5 US theatrical US international US character US teaser US imax