"Homer's Enemy" is the twenty-third episode of the eighth season of the American animated television series The Simpsons. It was first broadcast on the Fox network in the United States on May 4, 1997. The episode's plot centers on the Springfield Nuclear Power Plant's hiring a new employee named Frank Grimes. Despite Homer's attempts to befriend him, Grimes is angered and irritated by Homer's laziness and incompetence despite leading a comfortable life. He eventually declares himself Homer's enemy. Meanwhile, Bart buys a run-down factory for a dollar."Homer's Enemy" was directed by Jim Reardon and the script was written by John Swartzwelder, based on an idea pitched by executive producer Bill Oakley. The episode explores the comic possibilities of a realistic character with a strong work ethic hired for a job where he has to work alongside a man like Homer. The show's staff worked hard to perfect the character of Frank Grimes. He was partially modeled after Michael Douglas as he appeared in the film Falling Down. Hank Azaria provided the voice of Frank Grimes, and based some of the character's mannerisms of actor William H. Macy. Frank Welker guest stars as the voice of the Executive Vice President dog.In its original broadcast on the Fox network, "Homer's Enemy" acquired a 7.7 Nielsen rating. It was viewed in approximately 7.5 million homes, finishing the week ranked 56th. "Homer's Enemy" is considered to be one of the darkest episodes of The Simpsons and is a favorite of several members of the production staff—including Bill Oakley, Josh Weinstein, and Matt Groening—and of The Office co-creator Ricky Gervais. Although Grimes makes his only appearance in this episode, he was later named one of the "Top 25 Simpsons Peripheral characters" by IGN. Frank Grimes has since been referenced several times in the show, often showing his tombstone, and occasionally mentioning him by name. In the season fourteen episode "The Great Louse Detective", it is revealed that he fathered a son named Frank Grimes, Jr., who unsuccessfully tries to kill Homer.