Mo Willems: Mo Willems. Writer: Sesame Street. Mo Willems was born on 11 February 1968 in Des Plaines, Illinois, USA. He is a writer and producer, known for Sesame Street (1969), Sheep in the Big City (2000) and Caillou the Comedy World Series! (2024). He has been married to Cheryl Willems since 27 September 1997. They have one child.
Known For: Sesame Street (Writer), Sheep in the Big City (Writer), Caillou the Comedy World Series! (Writer(creator)), Codename: Kids Next Door (Writer)