Rudolph the Red-Nosed Reindeer is a Christmas television special produced in stop motion animation by Rankin/Bass. It first aired Sunday, December 6, 1964, on the NBC television network in the United States, and was sponsored by General Electric under the umbrella title of The General Electric Fantasy Hour. The special was based on the Johnny Marks song "Rudolph the Red-Nosed Reindeer" which was itself based on the 1939 poem Rudolph the Red-Nosed Reindeer written by Marks' brother-in-law, Robert L. May. Since 1972, the special has aired mostly on CBS affiliate television stations, with the network unveiling a high-definition, digitally remastered version of the program in 2005. As with A Charlie Brown Christmas and How the Grinch Stole Christmas, Rudolph no longer airs just once annually, but several times during the Christmas and holiday season and on several cable channels (including ABC Family). It has been telecast every year since 1964, making it the longest running Christmas TV special in history, and one of only four 1960s Christmas specials still being telecast, the other three being A Charlie Brown Christmas, How the Grinch Stole Christmas, and Frosty the Snowman.