The BEST episodes of The Simpsons season 21

Every episode of The Simpsons season 21, ranked from best to worst by thousands of votes from fans of the show. The best episodes of The Simpsons season 21!

Set in Springfield, the average American town, the show focuses on the antics and everyday adventures of the Simpson family; Homer, Marge, Bart, Lisa and Maggie, as well as a virtual cast of thousands. Since the beginning, the series has been a pop culture icon, attracting hundreds of celebrities to guest star. The show has also made name for itself in its fearless satirical take on politics, media and American life in general.

Last Updated: 11/11/2024Network: FOXStatus: Continuing
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The Bob Next Door
star
7.49
2330 votes

#1 - The Bob Next Door

Season 21 - Episode 22 - Aired 5/16/2010

Bart becomes convinced that his new neighbor, Walt, is his archenemy, Sideshow Bob, disguised and back for revenge. But when Marge tries to convince Bart otherwise by taking him to visit the state penitentiary, a disturbing truth is revealed.

Directors: Nancy Kruse
Writer: John Frink
Watch Now:Apple TV
Stealing First Base
star
7.41
2728 votes

#2 - Stealing First Base

Season 21 - Episode 15 - Aired 3/21/2010

Principal Skinner announces that Mrs. Krabappel was called out of town and budget cuts dictate that, until she returns, the school's two fourth grade classes will merge. Bart reluctantly shares a desk with Nikki and develops a flirtatious rapport. Bart talks to Grampa about his new crush, and at Grampa's suggestion, gives Nikki a kiss. But when Nikki starts sending Bart mixed signals, he swears off women forever. Meanwhile, Lisa's classmates ostracize her for being an overachiever, and First Lady Michelle Obama, a self-professed nerd, comes to Lisa's defence.

Writer: John Frink
Watch Now:Apple TV
Boy Meets Curl
star
7.32
2611 votes

#3 - Boy Meets Curl

Season 21 - Episode 12 - Aired 2/14/2010

Homer takes Marge out for a romantic evening of ice skating and hand-holding, but upon entering the rink, they encounter a curling team practising. Marge and Homer take to the ice and discover their love for the sport, and soon after, join the curling team and compete with them in the Olympic trials. Team Springfield claims the win and moves on to the 2010 Vancouver Games where Bob Costas covers the action. Meanwhile, sleazy vendors introduce Lisa to the world of collecting Olympic pins, and before long, Lisa is hopelessly addicted.

Directors: Chuck Sheetz
Writer: Rob LaZebnik
Watch Now:Apple TV
To Surveil with Love
star
7.30
2825 votes

#4 - To Surveil with Love

Season 21 - Episode 20 - Aired 5/2/2010

A bomb squad mistakenly blows up Homer's unattended gym bag, releasing radiation into the city and authorities react by suspending civil liberties. Wiggum and his men install surveillance cameras around Springfield and round up suspected terrorists, including groundskeeper Willie, but when monitoring the nonstop flow of video imagery proves to be too much, Wiggum enlists concerned citizens to help keep the city safe. Meanwhile, Lisa becomes fed up with being blonde, so she dyes her hair a dark color.

Watch Now:Apple TV
American History X-cellent
star
7.28
2669 votes

#5 - American History X-cellent

Season 21 - Episode 17 - Aired 4/11/2010

When the police are called to diffuse a rowdy crowd at Mr. Burns' estate, one of the officers recognizes priceless stolen paintings on the walls, and the maniacal billionaire is taken downtown for questioning. With Mr. Burns gone, Smithers takes charge of the power plant. But when employees take advantage of his good nature, he exacts revenge by forcing the employees to work night and day. These unfair working conditions prompt Homer and his crew to devise a plan to bust out Mr. Burns.

Directors: Bob Anderson
Watch Now:Apple TV
Postcards from the Wedge
star
7.26
2717 votes

#6 - Postcards from the Wedge

Season 21 - Episode 14 - Aired 3/14/2010

When Bart fails to turn in his homework, Mrs. Krabappel sends a letter home about Bart's behaviour. Despite Bart's best efforts to intercept it, Homer reads the letter, and he and Marge visit Principal Skinner for a parent-teacher conference. Furious, Homer punishes him, but Marge takes a more sympathetic approach. When Bart realizes he can pit Homer and Marge against each other to his benefit, his scheming reaches new heights.

Directors: Mark Kirkland
Writer: Brian Kelley
Watch Now:Apple TV
Million Dollar Maybe
star
7.25
2610 votes

#7 - Million Dollar Maybe

Season 21 - Episode 11 - Aired 1/31/2010

Homer blows off Marge to buy a lottery ticket and winds up winning the million-dollar jackpot. Fearing how Marge will react if she finds out the reason Homer missed their date, Homer keeps his newly inherited fortune a secret and spoils his family with “anonymous” gifts. When Bart finds out, he and Homer spend the money like it’s going out of style, including buying front-row to tickets to see Coldplay in concert.

Directors: Chris Clements
Watch Now:Apple TV
Thursdays with Abie
star
7.23
2337 votes

#8 - Thursdays with Abie

Season 21 - Episode 9 - Aired 1/3/2010

Grampa is sitting on a bench waiting for his family when a thoughtful-looking man named Marshall Goldman approaches him and asks to hear about his life. Grampa tells Goldman about the time he was on a World War II battleship, which was hit by an enemy torpedo, and Goldman, a human-interest columnist, publishes it in The Springfield Shopper. Later, Grampa meets Mitch Albom and shares another story with Goldman for a follow-up article. Homer becomes jealous of Grampa's newfound fame and seeks a surrogate father. But when Homer discovers a draft of Goldman's third story, he must race to find Grampa before it is published and his life is changed forever.

Directors: Michael Polcino
Writer: Don Payne
Watch Now:Apple TV
The Great Wife Hope
star
7.22
2584 votes

#9 - The Great Wife Hope

Season 21 - Episode 3 - Aired 10/11/2009

Mixed martial arts (MMA) gains popularity in Springfield, and Marge leads a protest against it. The promoter of a local MMA company decides to gain publicity from the controversy by challenging Marge to a match, with the promise that he will shut down if she wins.

Directors: Matthew Faughnan
Watch Now:Apple TV
Treehouse of Horror XX
star
7.20
2454 votes

#10 - Treehouse of Horror XX

Season 21 - Episode 4 - Aired 10/18/2009

Lisa becomes livid with Miss Hoover, and in a series of homages to classic Hitchcock sets out for deadly revenge. Next, Krusty's latest fast-food sandwich transforms news anchor Kent Brockman into an enraged zombie and twenty-eight days later, cannibal zombies have overrun Springfield. In the final frightening fable, Homer accidentally falls through a trapdoor in Moe's tavern and impales himself on the pipes of Moe's microbrewery. Moe serves the barflies a glass of delicious beer flavoured with Homer's blood and Homer, now half-man, half-brewing apparatus, returns for vengeance.

Writer: Daniel Chun
Watch Now:Apple TV
Rednecks and Broomsticks
star
7.17
2303 votes

#11 - Rednecks and Broomsticks

Season 21 - Episode 7 - Aired 11/29/2009

After getting lost in a game of hide-and-seek, Lisa wanders into the field and discovers three teenage girls who are practising Wiccans. Though she is sceptical of their spells, the girls assure Lisa that they never hurt anyone and ask her to join their coven. Just before Lisa is inducted into their pact, Chief Wiggum arrives and arrests the three girls for witchcraft and Lisa becomes the star witness in the trial.

Writer: Kevin Curran
Watch Now:Apple TV
Chief of Hearts
star
7.14
2688 votes

#12 - Chief of Hearts

Season 21 - Episode 18 - Aired 4/18/2010

Homer is completing his court-ordered community service when he befriends his supervisor, Chief Wiggum, by offering him one of his sandwiches. Touched by the act of kindness, Wiggum assigns the other convicts unpleasant tasks, but allows Homer to join him at the picnic table. They continue to grow close, but when the Chief gets injured during a botched bank robbery, Homer doesn't come through when Wiggum needs him the most. Meanwhile, Bart becomes addicted to Battle Ball, a Japanese game made up of plastic balls and magnetic cards, and his family and teachers try to help him kick the habit.

Watch Now:Apple TV
The Squirt and the Whale
star
7.13
2755 votes

#13 - The Squirt and the Whale

Season 21 - Episode 19 - Aired 4/25/2010

The Simpsons decide to embrace a cheaper, alternate source of energy by erecting a wind turbine in their backyard. But when Homer realizes some of the power is being directed to the local electric company, he decides to remove his home from the grid and becomes completely dependent upon an unreliable source of power. Meanwhile, a storm erupts, trapping a magnificent 150-foot-long blue whale ashore, and Lisa and Homer attempt to help the poor creature.

Watch Now:Apple TV
Pranks and Greens
star
7.12
2451 votes

#14 - Pranks and Greens

Season 21 - Episode 6 - Aired 11/22/2009

Principal Skinner is getting fed up with Bart's pranks, so he informs Bart that he is not the best prankster after all. A former student named Andy Hamilton is hailed as the best prankster, and Bart sets out on a mission to track Andy down. However, when Bart finds out that Andy is a 19-year-old still in his pranking days, they become fast friends.

Directors: Chuck Sheetz
Watch Now:Apple TV
Judge Me Tender
star
7.12
2011 votes

#15 - Judge Me Tender

Season 21 - Episode 23 - Aired 5/23/2010

When Moe discovers a hidden talent for judging contests, he is approached by a television agent to join the AMERICAN IDOL judges' panel. Moe flies to Los Angeles where he tours the Fox lot and receives some sage career advice. Meanwhile, Homer drives Marge crazy when he begins hanging around the house.

Watch Now:Apple TV
Oh Brother, Where Bart Thou?
star
7.11
2622 votes

#16 - Oh Brother, Where Bart Thou?

Season 21 - Episode 8 - Aired 12/13/2009

One snowy day in Springfield, Lisa informs Bart that she and Maggie share a bond that Bart will never understand because he doesn't have a brother, so Bart asks Homer for a baby brother. When Homer denies Bart's request, Bart makes his way to the Springfield Orphanage to find what he thinks he's missing.

Writer: Matt Selman
Watch Now:Apple TV
The Color Yellow
star
7.08
2550 votes

#17 - The Color Yellow

Season 21 - Episode 13 - Aired 2/21/2010

When Miss Hoover asks her students to research their family history, Lisa is horrified to discover that most of her ancestors were bad people – a motley crew of horse thieves and deadbeats. But while rummaging through the attic, Lisa happens upon a diary kept by her ancestor, Eliza Simpson. As Eliza’s story unfolds, Lisa learns that her family was part of the Underground Railroad, a group that helped slaves escape to freedom. Eliza recounts liberating a slave named Virgil, but when Lisa presents her findings at school, some of her classmates refute it, leaving Lisa determined to exonerate her family’s name.

Directors: Raymond S. Persi
Watch Now:Apple TV
The Devil Wears Nada
star
7.07
2571 votes

#18 - The Devil Wears Nada

Season 21 - Episode 5 - Aired 11/15/2009

Marge and a group called the "Charity Chicks" pose for a calendar in hopes of raising money for charity, but Marge becomes the talk of the town thanks to her racy poses. Meanwhile, Carl is chosen as the newest supervisor at the nuclear power plant, and hires Homer to be his personal assistant.

Directors: Nancy Kruse
Writer: Tim Long
Watch Now:Apple TV
Bart Gets a 'Z'
star
7.06
2927 votes

#19 - Bart Gets a 'Z'

Season 21 - Episode 2 - Aired 10/4/2009

Mrs Krabappel is fired from Springfield Elementary after Bart spikes her coffee, causing her to make a drunken fool of herself. She is replaced by a cool new teacher, Mr. Vaughn, who is a quick hit with the kids. Bart, however, struggles with the guilt and considers telling Principal Skinner the truth.

Directors: Mark Kirkland
Writer: Matt Selman
Watch Now:Apple TV
The Greatest Story Ever D'ohed
star
7.01
2825 votes

#20 - The Greatest Story Ever D'ohed

Season 21 - Episode 16 - Aired 3/28/2010

When Homer is playing noisily in the yard, it disrupts Flanders' bible-study group. Coaxed by the reverend, a frustrated Flanders takes it upon himself to redeem Homer by inviting the Simpson family on his church retreat to Jerusalem. Unappreciative of the history and culture, Homer would rather hang out at the hotel's breakfast buffet rather than tour the city. But when an eccentric tour guide takes the group to famous monuments, including the Dome of the Rock and the Wailing Wall, Homer finally proves he is not beyond salvation.

Directors: Michael Polcino
Writer: Kevin Curran
Watch Now:Apple TV
Moe Letter Blues
star
6.98
2379 votes

#21 - Moe Letter Blues

Season 21 - Episode 21 - Aired 5/9/2010

As Mother's Day approaches, Moe narrates an episode in which he writes a letter to Homer, Apu and Reverend Lovejoy, who are vacationing with their children, and threatens to run away with one of their wives. While the trio tries to determine whose wife Moe is referring to, Homer, Lovejoy and Apu flashback to the intimate moments they initially ignored between Moe and Marge, Manjula and Helen Lovejoy. But when the boys return from their trip, they're in for the surprise of their lives.

Watch Now:Apple TV
Homer the Whopper
star
6.97
3213 votes

#22 - Homer the Whopper

Season 21 - Episode 1 - Aired 9/27/2009

Homer gets the lead in a movie about a superhero who can take on the powers of every superhero in any comic book he touches. To whip Homer into superhero shape, the studio hires a celebrity fitness trainer.

Directors: Lance Kramer
Watch Now:Apple TV
Once Upon a Time in Springfield
star
6.90
2248 votes

#23 - Once Upon a Time in Springfield

Season 21 - Episode 10 - Aired 1/10/2010

Krusty is approached by two network executives who want to bring on female co-star Princess Penelope to increase the show's female demographic. The onstage and behind-the-scenes rapport between Krusty and Princess Penelope grows, and before long, Krusty asks for his co-star's hand in marriage. Meanwhile, when Mr. Burns puts a stop to the free doughnuts at the plant to cut costs, Homer, Lenny and Carl decide to meet with a headhunter who specializes in nuclear workers and opens their eyes to opportunities free of draconian doughnut-cutting measures.

Watch Now:Apple TV