I don't know the name of the episode, but it's the treehouse of horror episode where the French bomb Springfield and almost everyone is dead or a mutant.
Also, if you have the DVD, pause the episode right at the part where the whole screen is white from the explosion. Then hit play. A hidden scene should play with Krusty. Did the scene work on yours and how did they get this to happen?
Also, if you have the DVD, pause the episode right at the part where the whole screen is white from the explosion. Then hit play. A hidden scene should play with Krusty. Did the scene work on yours and how did they get this to happen?