Scooby-Doo the head story editor on "Scooby-Doo" since 1983. Following the first season of "A Pup Named Scooby-Doo", Ruegger and much of his unit defected from Hanna-Barbera to Warner Bros. Animation to develop "Steven Spielberg Presents Tiny Toon Adventures" and later "Animaniacs", "Pinky and the Brain", and "Freakazoid!". From 1987 to 1988, Hanna-Barbera Productions produced "Hanna-Barbera Superstars 10", a series of syndicated TV movies featuring their most popular characters, including Yogi Bear, Huckleberry Hound, The Flintstones and The Jetsons. Scooby-Doo, Scrappy-Doo and Shaggy starred in three of these movies: "Scooby-Doo Meets the Boo Brothers" (1987), "Scooby-Doo and the Ghoul School" (1988),
The New Scooby-Doo Movies "Scooby-Doo, Where Are You!" aired on CBS for the next two years. No new "Scooby-Doo" cartoons would be produced until the show defected to ABC in September 1976 on the highly publicized "The Scooby-Doo/Dynomutt Hour". When the various "Scooby-Doo" series entered syndication in 1980, each "New Movies" episode was halved and run as two half-hour parts. The USA Network "Cartoon Express" began running the "New Movies" in their original format beginning in September 1990; they were rerun on Sunday mornings until August 1992. In 1994, "The New Scooby-Doo Movies" began appearing on three Turner Broadcasting networks: TNT, Cartoon Network and