Shaggy and Scooby-Doo quit their Saturday morning TV series in pursuit of Hollywood stardom. Shaggy and Scooby-Doo quit their Saturday morning TV series in pursuit of Hollywood stardom. Shaggy and Scooby-Doo quit their Saturday morning TV series in pursuit of Hollywood stardom. Shaggy and Scooby-Doo quit their Saturday morning TV series in pursuit of Hollywood stardom.