Springfield’s residents drive the real Skinner (Martin Sheen) out, the fake one resumes his role, and things return to normal — in a moment that many have cited as the beginning of the series’ end. However, “The Simpsons: The Complete Ninth Season” DVD boxset’s commentary reveals that the episode writer, Ken Keeler, still defends it and says it was “the best episode of television, I feel, I ever wrote.”