since 1980, and have also been shown on cable television networks such as TBS Superstation (until 1989) and USA Network (as part of the USA Cartoon Express from 1990 to 1994). In 1993, A Pup Named Scooby-Doo, having just recently ended its network run on ABC, began reruns on the Cartoon Network. With Turner Broadcasting purchasing Hanna-Barbera in 1991, in 1994 the Scooby-Doo franchise became exclusive to the Turner networks: Cartoon Network, TBS Superstation, and TNT. Canadian network Teletoon began airing Scooby-Doo, Where Are You! in 1997, with the other Scooby series soon following. When TBS and TNT ended their broadcasts of H-B cartoons in 1998, Scooby-Doo became the exclusive property of both Cartoon Network and sister station Boomerang. With Scooby-Doo's restored popularity in reruns on Cartoon Network, Warner Bros. Animation and Hanna-Barbera (by then a subsidiary of Warner Bros. following the merger of Time Warner and Turner Entertainment in 1996) began producing one new Scooby-Doo direct-to-video film a year, beginning in 1998. These films featured a slightly older version of the original five-character cast from the Scooby-Doo, Where Are You! days. The first four DTV entries were Scooby-Doo on Zombie Island (1998), Scooby-Doo! and the Witch's Ghost (1999), Scooby-Doo and the Alien Invaders (2000), and Scooby-Doo and the Cyber Chase (2001). Frank Welker was the only original voice cast member to return for these productions. Don Messick had died in 1997 and Casey Kasem, a strict vegetarian, relinquished the role of Shaggy after having to provide the voice for a 1995 Burger King commercial. Therefore, Scott Innes took over as both Scooby-Doo and Shaggy (Billy West voiced Shaggy in Scooby-Doo on Zombie Island). B.J. Ward took over as Velma, and Mary Kay Bergman voiced Daphne until her death in November 1999, and was replaced by Grey DeLisle. These first four direct-to-video films differed from the original series format by placing the characters in plots with a darker tone and pitting them against actual supernatural forces. Scooby-Doo on Zombie Island, featured the original 1969 gang, reunited after years of being apart, fighting voodoo-worshiping cat creatures in the Louisiana bayou. Scooby-Doo! and the Witch's Ghost featured an author (voice of Tim Curry) returning to his Massachusetts hometown with the gang, to find out that an event is being haunted by the author's dead ancestor Sarah, who was an actual witch. The Witch's Ghost introduced a goth rock band known as The