Robert James Keeshan was an American television producer and actor. He created and played the title role in the children's television program Captain Kangaroo, which ran from 1955 to 1984, the longest-running nationally broadcast children's television program of its day. He also played the original Clarabell the Clown on the Howdy Doody television program.

Captain Kangaroo is an American children's television series that aired weekday mornings on the American television network CBS for 29 years, from 1955 to 1984, making it the longest-running nationally broadcast children's television program of its day. In 1986, the American Program Service integrated some newly produced segments into reruns of past episodes, distributing the newer version of the series to PBS and independent public stations until 1993.