By its fourth season, The Simpsons had come far enough where Lisa could make a self-referential joke about Dustin Hoffman and Michael Jackson's pseudonymous guest voice appearances in seasons 2 and 3, respectively. In this season, no less than Elizabeth Taylor (in two episodes), Bette Midler, and even the reclusive Johnny Carson blessed The Simpsons with their iconic presences. Awhile back, Entertainment Weekly ranked The Simpsons' Top 25 best episodes ever. Five gems from season 4 cracked the top 12, including the (debatable) choice for No. 1, "Last Exit to Springfield." Other episodes that loom large in the Simpsons legend are "Mr. Plow" (you know the jingle: "Call Mr. Plow / That's my name / That name again is Mr. Plow"), "Marge vs. the Monorail," featuring a Music Man-style extravaganza, and "A Streetcar Named Marge," the episode that outraged New Orleans residents, who heard their fair metropolis referred to as "a city that the damned call home." - Donald Liebenson, Amazon.com
When Bart fails to keeps an eye on Maggie and puts her life in danger, Homer finally puts his foot down on Bart's mischief by passing the ultimate punishment: Bart can never see The Itchy and Scratchy Movie.
The Simpsons home needs about $8,000 worth of foundation work, so Marge gets a job at Springfield Nuclear Power Plant. However, things start getting a bit sticky when Mr. Burns develops a crush on Marge. Tom Jones guest stars.
After Homer wrecks the two family cars during a snowstorm, he buys a snowplow and starts up his own business, Mr. Plow. However, the competition becomes tough when Homer's best buddy, Barney, starts up a competing plowing business, Plow King.
While trying to get Maggie to say her first words, Homer recalls what happened a few years back when Lisa was born, when they first moved into their present home. Elizabeth Taylor does the voice of Maggie.
All those years of eating those fatty foods has caused Homer to have a heart attack. Now, Homer has a choice - spend $40,000 for Dr. Hibbert's bypass operation, or $129.95 for Dr. Nick Riviera's operation.
After getting $3 million from a fine due to Mr. Burns' illegal disposal of nuclear waste, the town decides to spend the money on a monorail....built from shoddy materials. Phil Hartman does the voice of Lyle Lanley while Leonard Nimoy guest voices as himself.
After Homer gets caught drunk driving, he promises Marge to stay off deer....uh, beer, for one month. Meanwhile, when Bart ruins Lisa's science project, Lisa vows to take revenge by determining which is smarter: her brother or a hamster.
After watching a particularly bad Itchy and Scratchy cartoon, Lisa and Bart write their own episode using Grampa Simpson's name. Meanwhile, Homer takes night school to make up a missing science credit. Brooke Shields and David Crosby guest star.
The town of Springfield prepares for the annual snake whacking day, which Lisa dreads. Meanwhile, Bart gets expelled from school for embarrassing Principal Skinner during a school inspection. Barry White guest stars.
When the Gabbo show causes Krusty to get cancelled, Krusty quickly hits the skids. However, Lisa and Bart vow to help Krusty out by organizing a comeback special. Bette Midler, Elizabeth Taylor, Hugh Hefner, Johnny Carson, Luke Perry, and the Red Hot Chili Peppers all guest star.