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Mindy Simmons was hired as an engineer at the nuclear power plant, due to pressure on Mr. Burns to have at least one female employee. Homer quickly developed a crush on her, due to many similarities they had, such as a fondness for beer, junk food, and TV. Mindy was very beautiful and was equally attracted to Homer. He went to great lengths to try to avoid her, but the two were selected to represent the nuclear power plant at the National Energy Convention in Capital City. Homer was tempted to enter into an affair with her (and felt compelled to by a fortune cookie which said that he was going to find a new love), but ended up deciding to stay faithful to Marge.
After Homer turned Mindy down, she "hit the bottle pretty hard" and was fired from the nuclear power plant. However, she may have been re-hired, as she was later seen at the plant's team-building retreat at Mt. Useful.
 Similarities to Homer
Mindy is the female equivalent of Homer: She likes cheeseburgers, a quick nap before lunch, foot-long chili dogs, whipped cream straight from the can, raspberry swirl doughnuts with a double glaze, drinking beer, watching TV, and roasted anything. When Homer tried to think unsexy thoughts in order to keep his mind off Mindy, she was doing the same thing about Homer. Mindy also has a tendency to drool like Homer when thinking about food and even uses his "Mmm..." catchphrase. The only difference between the two of them is that despite her overindulgent ways, Mindy has a slim and attractive figure, contrasted with Homer's overweight appearance.
Homer accidentally knocked himself unconscious while grappling with the dilemma of his attraction to Mindy. A spirit, in the form of Colonel Klink from Hogan's Heroes, showed Homer the "disaster" of what would have happened if he married Mindy instead of Marge. They would have been very wealthy and Marge would have been the President of the United States.
 Behind the Laughter
Michelle Pfeiffer provided the voice of Mindy Simmons in the episode "The Last Temptation of Homer". In one scene in the episode, Mindy drools as she eats donuts, much like Homer does. To get the right drool sound, Pfeiffer put broccoli and water in her mouth.
Many scenes in the animatic portrayed Mindy as flirty. David Mirkin did not like this because the secret of the episode was Homer and Mindy are two good people who are thrown into the situation and "can't help that their libidos are going crazy upon seeing each other." He added that the two characters have "so much in common" that it is "not just a physical relationship, but a mental connection as well," and that Mindy is not a seductress but rather a woman just as nervous as Homer. Mirkin also pointed out that while Homer is being tempted by a "seemingly perfect" woman at work, his wife could not be more "imperfect" since she has got a cold and looks sick. "He's trying to connect with his family, but with Marge looking sick and Bart looking like a nerd, everything is just not working," Mirkin said.