"HOMR" (styled as "HOMЯ") is the ninth episode of The Simpsons’ twelfth season, originally aired on January 7, 2001 by the Fox Broadcasting Company. The episode is the 257th episode overall and the last episode produced for the eleventh season (the BABF production line). In the episode, while working as a human guinea pig (to pay off the family's lost savings after making a bad investment), Homer discovers the root cause of his subnormal intelligence: a crayon that was lodged in his brain ever since he was a child. He decides to have it removed to increase his IQ, but soon learns that being intelligent isn't always the same as being happy.
The episode was written by current show runner Al Jean and directed by supervising director Mike B. Anderson. The episode received positive reviews from critics, won an Emmy Award for Outstanding Animated Program and was nominated for an Annie Award. This is also the last episode in the BABF (season 11) production line.
When the Simpson family visits an animation festival, Homer discovers Animotion, a motion capture technology that enables a real person to control a cartoon character with his or her own movements. Homer volunteers to demonstrate this technology and likes it so much that he invests his life savings in the Animotion stock. Two days later, he discovers that the stock has plunged and the company behind the technology has gone out of business. At Moe's Tavern, he tells Barney and Moe about his economic troubles, and Barney suggests that Homer become a human guinea pig to earn money.
Homer gets a job at a medical testing center. During one experiment, while commenting on Homer's stupidity, the doctors find a crayon lodged in Homer's brain from a childhood incident when he stuck sixteen crayons up his nose and was unable to sneeze one of them out. The doctors opt to have the crayon removed and Homer accepts their offer. Homer survives the operation, and his IQ goes up from 55 to 105, allowing him to form a bond with his intelligent daughter Lisa. Homer's newfound brain capacity soon brings him enemies, however, after he does a thorough report on the Springfield Nuclear Power Plant's many hazards, leading to a massive number of layoffs after the plant is shut down until it can be brought up to code.
When Homer visits Moe's Tavern, he sees an effigy of himself being burnt by his friends that worked at the plant. Homer realizes that his improved intelligence is no longer welcome and that his life was a lot more enjoyable when he was a moron. He therefore begs the test center doctors to put the crayon back into his brain. The scientists refuse to do it, but recommend Homer to someone who can: Moe, who's not only a bartender but also an unlicensed physician. At his bar, Moe inserts a crayon into Homer's brain, returning him to the idiot he was before. Lisa's initially saddened that she and her father have lost the new connection they shared, but cheers up when she finds a note written by Homer before the operation, explaining that while he's taking the "coward's way out," he has greater appreciation for Lisa after realizing what it's like to be smart like she is.
The episode originally aired on the Fox network in the United States on January 7, 2001. It was viewed in approximately 10.2 million households that night. With a Nielsen rating of 10.0, the episode finished 19th in the ratings for the week of January 1–7, 2001 (tying a 2001 Sugar Bowl pre-game show on ABC). It was the highest-rated broadcast on Fox that week. On August 18, 2009, "HOMR" was released on DVD as part of the box set The Simpsons – The Complete Twelfth Season. Staff members Mike B. Anderson, Al Jean, Mike Scully, Ian Maxtone-Graham, Matt Selman, Tom Gammill, and Max Pross participated in the DVD audio commentary for the episode. Deleted scenes from the episode were also featured on the box set.
Critical response 
"HOMR" has received generally positive reviews from critics. IGN's Cindy White called it a classic and The Florida Times-Union writer Soyia Ellison named it one of the ten best The Simpsons episodes. The staff of AOL Television listed it at number eighteen on a list of the top twenty best episodes of the series. Nancy Basile of About.com enjoyed the episode, commenting that the storyline was "solid and didn't go off track" and that the jokes "were clever, just like the old days." She added that she "was surprised to find Homer even funnier as a genius", and praised the many references to popular culture included in the episode, "such as Japanimation, smoking, pipe bombs and planned parenthood, ebay and more that I can't remember." Basile was, however, disappointed that the writers put Moe in the role of the unlicensed physician when they had an opportunity to use the character Dr. Nick. Similarly to Basile, Jason Bailey of DVD Talk thought Homer got "hilariously smart" in "HOMR". DVD Movie Guide's Colin Jacobson was less positive, writing in a review that one should not "expect a lot of thrills" from the episode as he thought it had "a moderately rehashed feel". He noted that "brainy Homer sure does remind me a lot of loquacious Homer from Season Three’s 'Bart's Friend Falls in Love'."
At the 53rd Annual Primetime Emmy Awards, "HOMR" won the award for "Outstanding Animated Program (for Programming Less Than One Hour)", beating episodes of Futurama, As Told by Ginger, King of the Hill, and The Powerpuff Girls. At the 29th Annie Awards, Jean received a nomination in the category "Outstanding Individual Achievement for Writing in an Animated Television Production" for his work on "HOMR". However, he lost to Ron Weiner—the writer of the Futurama episode "Luck of the Fryrish".
- Alberti, John (2004). Leaving Springfield: The Simpsons and the Possibility of Oppositional Culture. Wayne State University Press. p. 324. ISBN 978-0-8143-2849-1.
- Associated Press (2001-01-10). "This week's top shows". Press-Telegram. p. A12.
- Lambert, David (2009-05-20). "The Simpsons – Season 12 Street Date, Detailed Contents & 'Comic Book Guy Head' Box". TVShowsOnDVD.com. Retrieved 2011-11-01.
- Jacobson, Colin (2009-09-02). "The Simpsons: The Complete Twelfth Season (1999)". DVD Movie Guide. Retrieved 2011-11-01.
- White, Cindy (2009-08-18). "The Simpsons: The Complete Twelfth Season DVD Review". IGN. Retrieved 2012-06-29.
- McAlister, Nancy (2003-02-16). "A sassy 'Simpsons' celebration Fox hits a Homer as it broadcasts the 300th episode of the animated sitcom tonight". The Florida Times-Union. p. D-1.
- "'The Simpsons' Best Episodes: No. 20 - 16". AOL Television. Archived from the original on 2009-01-01. Retrieved 2012-06-29.
- Basile, Nancy. "'The Simpsons' Episode Guide - Season Twelve". About.com. Retrieved 2011-11-02.
- Bailey, Jason (2009-08-18). "The Simpsons: The Twelfth Season". DVD Talk. Retrieved 2011-11-01.
- Durden, Douglas (2001-11-05). "The show must go on, so the Emmys finally did". Richmond Times-Dispatch. p. A-7.
- "Emmy 2001 nomination list". Variety. 2001-07-12. Retrieved 2012-06-29.
- "Legacy: 29th Annual Annie Award Nominees and Winners (2001)". Annie Awards. Retrieved 2012-06-28.
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- "HOMЯ" at The Simpsons.com
- "HOMR" episode capsule at The Simpsons Archive
- "HOMЯ" at the Internet Movie Database