Arthur Rankin, Jr. and Jules Bass produced some of the most beloved Christmas specials we know including the big four, Santa Claus is Coming to Town, Frosty the Snowman, The Year Without Santa Claus, and the mother of all, Rudolph the Red-Nosed Reindeer. To celebrate the most famous reindeer of all's birthday Donna Ruko has five things you don't know about this classic Christmas tale.