Ask any masked cartoon villains and they'll give you an earful about those "meddling kids" and their silly dog. No doubt they're whining about Scooby-Doo, America's most endearing crime-fighting Great Dane. In 1969, Scooby, Shaggy, Fred, Velma, and Daphne drove into the Saturday-morning lineup in a funky colored van, aptly dubbed "the Mystery Machine." Solving endless frightfully funny whodunits, Scooby and gang became the most successful and well-recognized troupe in the Hanna-Barbera family.