LITTLE Bill was drawing Snoopy, full of energy and enthusiasm. That day, Bill Watterson had decided to join a poster competition. But although the drawing of Snoopy, his beloved cartoon character, was excellent, Bill was disqualified for what was seen as copying. "My heart was so broken," says Watterson of his childhood memory in The Calvin and Hobbes Tenth Anniversary Book, a compilation of selected Calvin and Hobbes episodes and the s