Homer's Triple Bypass
Marge vs. the Monorail
Selma's Choice


  • Leonard Nimoy wasn't originally supposed to appear in this episode as the grand marshal for the monorail's maiden voyage. George Takei (Sulu from the original Star Trek series) was originally picked to appear on the show, but Takei didn't want to appear in something that mocked public transportation (as Takei was on California's Board of Public Transportation at the time and was an advocate of it). William Shatner (Captain Kirk from the original Star Trek series) was also considered, but the idea was scrapped as Shatner already turned down an appearance on a previous Simpsons episode.
  • The chalkboard gag for this episode is "I will not eat things for money". Bart later does do this in the episode Diggs when he is trying to pay Homer back.
  • As the solar eclipse is shown a few bars of the main theme from Star Trek The Motion Picture (and The Next Generation) are heard, as Nimoy himself narrates.
  • The monorail is a drivable vehicle in The Simpsons: Hit & Run. It can be found on top of the monorail station as the secret hidden car for Level 2.
  • This was the first episode to be broadcast in 1993.
  • This episode was nominated on a Twitter poll as the best Simpsons episode at 55%, with Last Exit to Springfield acting as the runner-up.


  • The episode's opening scene is a parody of the opening of The Flintstones, complete with the same music, to which Homer sings his own lyrics.
  • The main premise of a con man getting a town excited about something he sells but hardly knows anything about is borrowed from the musical "The Music Man".
  • Lanley's appearance and the musical number at the end of the town hall meeting is a nod to some of the songs in The Music Man as well.
  • A "reverse reference" occurred in 2002 when Seattle residents opposed to a proposed monorail project held a protest event called "Coming Out With Marge Simpson". The event organizers planned to show the episode as part of the protest, but were ordered not to by Fox due to copyright laws.
  • The scene where Mr. Burns (as Mr. Snrub) and Smithers escape the town hall via a grappling hook is a reference to the 1989 movie Batman. Homer would later mistake Sebastian Cobb, the North Haverbrook contractor, for Batman.
  • Whilst studying for the monorail conductor exam, the study book is entitled MCAT (Monorail Conductor Aptitude Test), which is a reference to the MCAT (Medical College Admission Test) taken by many medical students. 
  • The sound-alike version of Axel F can be heard in this episode when Mr. Burns takes the toxic waste drums to dispose of.


The man on the bottom left has transparent legs

  • Snake is shown burgling homes, but is also among the crowd singing the monorail song. 
  • Doctor Hibbert was among the passengers on the monorail on the first ride, but he is seen with a pair of conjoined twins in his office soon after. 
  • After the monorail car is accidentally dropped on the house, a man in the background has legs that aren't colored in.

    Maude (second from left on bottom) with arms the color of her waistcoat

  • When Maggie is reaching for the possum in the monorail, her pacifier, Marge's pearls and tongue change color.
  • After the monorail song ends, when Homer says "Mono--", Maude's sleeves change from pink to the same color as her waistcoat. Also before looking at Homer, Lou and Eddie's arms are miscolored blue instead of brown and yellow respectively.

Season 3 Season 4 References/Trivia Season 5
Kamp KrustyA Streetcar Named MargeHomer the HereticLisa the Beauty QueenTreehouse of Horror IIIItchy & Scratchy: The MovieMarge Gets a JobNew Kid on the BlockMr. PlowLisa's First WordHomer's Triple BypassMarge vs. the MonorailSelma's ChoiceBrother from the Same PlanetI Love LisaDufflessLast Exit to SpringfieldSo It's Come to This: A Simpsons Clip ShowThe FrontWhacking DayMarge in ChainsKrusty Gets Kancelled
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