Overview
"Lisa's Substitute" is the nineteenth episode of the second season of the American animated television series The Simpsons. It originally aired on the Fox network in the United States on April 25, 1991. In the episode, Lisa's teacher Miss Hoover takes medical leave due to what she thinks is Lyme disease, so substitute teacher Mr. Bergstrom takes over the class. Lisa finds Mr. Bergstrom's teaching methods inspiring and discovers an entirely new love for learning. When Miss Hoover returns to class, Lisa is devastated to lose her most positive adult role model. Eventually, she realizes that while Mr. Bergstrom was one of a kind, she can find role models in other people, including her father Homer. Meanwhile, Bart runs for class president against Martin.
The episode was written by Jon Vitti and directed by Rich Moore. It is the first episode of the show to have the opening sequence start at the driveway scene. Dustin Hoffman, using the pseudonym Sam Etic, guest-starred as Mr. Bergstrom, who was modeled on the physical appearance of Mike Reiss, a longtime writer and producer on the show. The episode features cultural references to Mike Nichols's film The Graduate, which starred Hoffman, and the novel Charlotte's Web by E. B. White.
Since airing, the episode has received positive reviews from television critics, and it is one of the most celebrated episodes in the show's history, with many fans regarding it as the best episode of the series. It acquired a Nielsen rating of 11.1, and was the highest-rated show on Fox the week it aired.
Plot
Lisa's teacher, Miss Hoover, announces to her class that she has Lyme disease, and is taking a leave of absence. She is soon replaced by a substitute teacher, Mr. Bergstrom. When Mr. Bergstrom shows up for his first day teaching Lisa's class, he is dressed as a cowboy and pretends he is in Texas in 1830, and asks the students to name three historical inaccuracies on his costume. Lisa is able to name four historical innacuracies, and Mr. Bergstrom is impressed by Lisa's knowledge of his deliberate anachronisms. He rewards her with his cowboy hat. Due to Mr. Bergstrom's unorthodox teaching methods and friendly nature, Lisa begins to look up to him. When Lisa and Homer are visiting a museum, they run into Mr. Bergstrom, and Lisa becomes embarrassed when Homer displays his ignorance. Sensing a void in Lisa and Homer's relationship, Mr. Bergstrom takes Homer aside to suggest he be a more positive role model.
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