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! and the Witch's Ghost Billy Ray Cyrus performing "Scooby-Doo, Where Are You!". "Scooby-Doo and the Alien Invaders" was released on October 3, 2000. Scooby-Doo! and the Witch's Ghost Scooby-Doo and the Witch's Ghost is a 1999 direct-to-video animated supernatural horror-comedy film, and the second of the direct-to-video films based upon Hanna-Barbera's "Scooby-Doo" Saturday morning cartoons. It was released on October 5, 1999, and it was produced by Warner Bros. Animation (although it contained a "Hanna-Barbera Cartoons, Inc." copyright and logo). The Mystery Inc. gang (Scooby-Doo, Shaggy, Fred, Daphne and Velma) travel to a New England town called Oakhaven after being invited by horror writer