Happy birthday, Shrek

book cover for ShrekThe ogre who inspired a series of blockbuster movies and a Broadway musical turns 20 this year, and it's time to celebrate. Author-illustrator William Steig introduced the beloved character in Shrek!, a picture book first published in 1990. Check out the original Shrek story, or one of Steig's other acclaimed children's books, including Abel's Island, The Amazing Bone or Sylvester and the Magic Pebble, which won the Caldecott Medal in 1970. And there's also, of course, the movie adaptation and its sequels, including Shrek Forever After, which was released earlier this year.