Casey Kasem was an American radio personality and voice actor, best known for hosting the popular radio countdown show, American Top 40. He began his career in the 1950s and became a prominent figure in the music industry, providing listeners with weekly updates on the top songs in the United States. In addition to his radio work, Kasem was also famous for voicing Shaggy Rogers in the Scooby-Doo franchise. His distinctive voice and engaging style made him a beloved figure in entertainment, and he continued to influence the industry until his passing in 2014.