FILE - In this Feb. 14, 2012 file photo, Matt Groening, creator of the animated series "The Simpsons," poses with his character creations Bart Simpson, left, and Homer Simpson after he received a star on the Hollywood Walk of Fame in Los Angeles. One of the best-kept secrets in television history has been revealed, with Groening pointing to Springfield, Ore. as the inspiration for the animated hometown of Homer and family. (AP Photo/Chris Pizzello, File)