Mo Willems knows a Good Idea when he sees one. A three-time Caldecott Honor winner (forDon''t Let the Pigeon Drive the Bus!,Knuffle Bunny, andKnuffle Bunny Too), he also won two Geisel Medals and two Geisel Honors for his Elephant and Piggie books. His books are perennialNew York Timesbestsellers, includingKnuffle Bunny Free,Hooray for Amanda & Her Alligator!, and the Cat the Cat series. Before he turned to making picture books, Mo was a writer and animator onSesame Street, where he won six Emmys. Mo lives with his family in Massachusetts.