Not even threats of visits by Sideshow Bob or Fat Tony could wheedle many details of the upcoming “The Simpsons Movie” out of the series’ powers that be. Specifics remain as closely guarded as the identity of the state in which Springfield is located. “I can’t really tell you much,” said director David Silverman, “other than the Simpsons will be in it. Springfield will be in it; it’s not being shot in Vancouver. Very few animals were hurt in the shooting of this film
