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In this Feb. 14, 2012 file photo, Matt Groening, creator of the animated series "The Simpsons," poses with his character creations Jack Kohler crosses Main Street Tuesday, April 10, 2012, in downtown Springfield, Ore. One of the best-kept secrets in television Jack Kohler walks near Main Street Tuesday, April 10, 2012, in downtown Springfield, Ore. One of the best-kept secrets in televisi Debra Gruell, Executive Director Springfield Museum, holds a Simpson's plaque that was given by "The Simpsons" creator Matt Groeni Debra Gruell, Executive Director Springfield Museum, holds a Simpson's plaque that was given by "The Simpsons" creator Matt Groen Debra Gruell, Executive Director Springfield Museum, holds a plaque that was given by "The Simpsons" creator Matt Groening at the The Simpsons Couch is on display at the Springfield Museum Tuesday, April 10, 2012, in Springfield, Ore. One of the best-kept secr Debra Gruell, Executive Director Springfield Museum, holds a plaque that was given by "The Simpsons" creator Matt Groening at the A "Welcome to Springfield" is posted along a road in Springfield, Ore. Tuesday, April 10, 2012. One of the best-kept secrets in te Debra Gruell, Executive Director of the Springfield Museum, sits on the The Simpsons Couch at the museum Tuesday, April 10, 2012, The Simpsons Couch is shown on display at the Springfield Museum Tuesday, April 10, 2012, in Springfield, Ore. One of the best-kep