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
Scooby-Doo 2002, Jamie Malanowski of the "New York Times" commented that "["Scooby-Doo"s] mysteries are not very mysterious, and the humor is hardly humorous. As for the animation—well, the drawings on your refrigerator may give it competition." By the 2000s, "Scooby-Doo" had received recognition for its popularity by placing in a number of top cartoon or top cartoon character polls. The August 3, 2002, issue of "TV Guide" featured its list of the 50 Greatest Cartoon Characters of All Time, in which Scooby-Doo placed twenty-second. Scooby also ranked thirteenth in Animal Planet's list of the 50 Greatest TV Animals. For one year