The Simpsons Season 12 Episode 9 : HOMR

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 boy. He decides to have it removed to increase his IQ, but discovers that being smart does not necessarily equal being happy.

NameThe Simpsons Season 12 Episode 9: HOMR
Air DateJanuary 7th, 2001
GenresAnimation, Comedy
NetworkFOX
Production CompaniesThe Curiosity Company, Gracie Films, 20th Century Fox Television
WriterAl Jean
DirectorMike B. Anderson
Guest StarTress MacNeille
Plot Keywordsmother, baby, alcohol, cat, brother, clown, house, housewife, beer, satire, father, nuclear power plant, parody, middle class, sister, dysfunctional family, teacher, social satire, neighbor, school, dummy, dog, donuts
Pamela Hayden
Pamela Hayden
Milhouse Van Houten
Russi Taylor
Russi Taylor
Martin Prince
Maggie Roswell
Maggie Roswell
Luann Van Houten
Marcia Wallace
Marcia Wallace
Edna Krabappel
Tress MacNeille
Tress MacNeille
Agnes Skinner
Phil Hartman
Phil Hartman
Troy McClure
Chris Edgerly
Chris Edgerly
Hank Azaria
Hank Azaria
Apu
Yeardley Smith
Yeardley Smith
Lisa Simpson
Julie Kavner
Julie Kavner
Marge Simpson
Nancy Cartwright
Nancy Cartwright
Bart Simpson
Dan Castellaneta
Dan Castellaneta
Homer Simpson
Harry Shearer
Harry Shearer
Ned Flanders

Other Episodes