"The Simpsons" is by far FOX's most successful television series to date. The show originally started as a spinoff of The Tracey Ullman Show, with one-minute shorts featuring the Simpson family. Executives James L. Brooks and Sam Simon saw the potential in these characters and decided to turn them into a half-hour sitcom, which became the longest-running primetime animated series on television. The frequent appearances of the Simpson family quickly gained popularity, landing them commercial deals like the Butterfinger Candy Bars commercials. The Simpsons family members include the unconventional patriarch Homer, who struggles to lead his dysfunctional family but often finds himself being the one led. Despite their many mishaps, the family continues to live happily together in Springfield. Other family members include the loving blue-haired mother Marge, troublemaker son Bart, talented and surprising daughter Lisa, and baby Maggie. While the family remains timeless, the backdrop of Springfield undergoes changes with the times. The residents of Springfield are typically voiced by actors like Hank Azaria (including Moe the bartender), Harry Shearer (Mr. Burns, Ned Flanders), and various celebrity guest stars like Michael Jackson, Dustin Hoffman, Bob Hope, William H. Macy, Kathleen Turner, Johnny Carson, NSYNC, Paul McCartney, and even The Rolling Stones.