Scooby-Doo the series and the billing, in an attempt to boost "Scooby-Doo"s slipping ratings. The 1979–80 episodes, aired under the new title "Scooby-Doo and Scrappy-Doo" as an independent half-hour show, succeeded in regenerating interest in the show. Lennie Weinrib voiced Scrappy in the 1979–80 episodes, with Don Messick assuming the role thereafter. Marla Frumkin replaced Pat Stevens as the voice of Velma mid-season. As a result of "Scooby-Doo and Scrappy-Doo's" success, the entire show was overhauled in 1980 to focus more upon Scrappy-Doo. At this time, Scooby-Doo started to walk and run anthropomorphically on two feet more often, rather than on
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