Looney Tunes is a series of Warner Bros. animated comedy short films. It was produced from 1930 to 1969 during the golden age of American animation, alongside its sister series, Merrie Melodies. Looney Tunes originally showcased Warner-owned musical compositions through the adventures of cartoon characters such as Bosko and Buddy. Later Looney Tunes films featured such popular characters as Bugs Bunny, Daffy Duck, Porky Pig, Elmer Fudd, Sylvester, Tweety, Wile E. Coyote and The Road Runner. The characters themselves are commonly referred to as the "Looney Tunes." The series' name is a parody of Silly Symphonies, the name of Walt Disney's concurrent series of music-based short films. From 1942 into the 1960s, Looney Tunes and Merrie Melodies were the most popular cartoon shorts in movie theaters, exceeding the works of Disney and other popular competitors, including Paramount's Famous Studios (originally Fleischer Studios), Universal's Walter Lantz Productions, Columbia's UPA (originally Screen Gems), 20th Century Fox's Terrytoons, and MGM. Since its success during the short film era of cartoons, Looney Tunes has become a worldwide media franchise; spawning several television series, feature films, comic books, music albums, video games, and amusement park rides. Many of the characters have made and continue to make cameo appearances in various other television shows, films, and advertisements. The most popular Looney Tunes character, Bugs Bunny, is regarded as a cultural icon and has appeared in more films than any other cartoon character. Several Looney Tunes films are regarded as some of the greatest animated cartoons of all time. In 2013, TV Guide ranked Looney Tunes the third Greatest Cartoon of All Time (out of 60).