One half of the most celebrated animation-producing duos in history, William Hanna and Joseph Barbera's company, Hanna-Barbera Productions, created some of the best-loved animated television programming of the 20th century and beyond, including "The Huckleberry Hound Show" (syndicated, 1958-1961), "The Yogi Bear Show" (syndicated, 1961-62), "The Flintstones" (ABC, 1960-66), "The Jetsons" (ABC, 1962-63), "Jonny Quest" (ABC, 1964-65), "Super Friends" (ABC, 1973-1986) and "The Smurfs" (NBC, 1981-89). With Barbera, Hanna began his career with the Oscar-winning Tom and Jerry animated shorts for MGM. When the company shuttered its animation division, the duo launched their own company, striking pay dirt almost immediately with "Huckleberry Hound" and "The Flintstones," their first primetime series. Hanna-Barbera's cartoons, driven largely by bright, simple artwork, clever writing, and memorable characters, led the television animation field until the 1980s, when financial difficulties resulted in their sale to a variety of companies. They rebounded in the 1990s as part of Turner Broadcasting's Cartoon Network, for which they oversaw such cutting-edge cartoons as "The Powerpuff Girls" (1998-2005) before Hanna's death in 2001. William Hanna's vast output of animated fare over the course of his six-decade career contained so many beloved characters and shows that his position as one of the dominant forces in American animation was assured for eternity.