Hanna-Barbera Productions, Inc. (also called Hanna-Barbera Cartoons, Inc., H-B Enterprises, Inc., or simply Hanna-Barbera), was an American animation studio that dominated North American television animation during the second half of the 20th century. The company was originally formed in 1957 by former MGM animation directors William Hanna and Joseph Barbera and live-action director George Sidney in partnership with Columbia Pictures' Screen Gems television division as H-B Enterprises. Today, Hanna-Barbera Productions is now an in-name-only unit of Warner Bros. Animation. Established after MGM shut down its animation studio in 1957, Hanna-Barbera Enterprises was re-named Hanna-Barbera Productions in 1959. Over the next three decades, the studio produced many successful cartoon shows, including The Flintstones, The Yogi Bear Show, Scooby-Doo, Where Are You!, The Jetsons, The Quick Draw McGraw Show, Top Cat, The Huckleberry Hound Show, Jonny Quest, Wacky Races, Space Ghost and The Smurfs. In the mid-1980s, the company's fortunes declined somewhat after the profitability of Saturday morning cartoons was eclipsed by weekday afternoon syndication.