In 1919, the Boston Red Sox traded Babe Ruth to the New York Yankees to finance a Broadway show. In 1968, NBC turned off the Jets-Raiders game with only seconds left to show the made-for-TV movie Heidi . In 1994, Tonya Harding decided the best way to win Olympic gold was by taking out Nancy Kerrigan's kneecap. In all of these situations, and many, many more, there is just one question fans can ask: What were they thinking? In these pages, sportswriter...