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 "Scooby" theatrical and direct-to-video features. From 1990 to 2002, Shaggy and Scooby-Doo appeared as characters in the "Funtastic World of Hanna-Barbera" simulator ride at Universal Studios Florida. The ride was replaced in the early 2000s with a "Jimmy Neutron" attraction, and "The Funtastic World of Hanna-Barbera" instead became an attraction at several properties operated by Paramount Parks. Shaggy and Scooby-Doo are currently costumed characters at Universal Studios Florida, and can be seen driving the Mystery Machine around the park. In 2001, "Scooby-Doo in Stagefright", a live stage play based upon the series, began touring across the world. A follow-up, "Scooby-Doo