Looney Tunes is a Warner Bros. animated cartoon series. It preceded the Merrie Melodies series and was Warner Bros.' first animated theatrical series. Since its first official release, 1930's Sinkin' in the Bathtub, the series has become a worldwide media franchise, spawning several television series, films, comics, music albums, video games and amusement park rides. The series features some of the most well-known and popular cartoon characters in history, including Bugs Bunny, Daffy Duck, Porky Pig, and Tweety Bird. Many of the characters have made cameo appearances in television shows, films and advertisements. The name Looney Tunes is a variation on Silly Symphonies, the name of Walt Disney's concurrent series of music-based cartoon shorts. From 1942 until 1969, Looney Tunes was the most popular short cartoon series in theaters, exceeding Disney and other popular competitors.