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Season 21

21x1: Homer the Whopper
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... read more »
Air date September 27th, 2009
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21x2: Bart Gets a 'Z'
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.... read more »
Air date October 4th, 2009
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21x3: The Great Wife Hope
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... read more »
Air date October 11th, 2009
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21x4: Treehouse of Horror XX
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... read more »
Air date October 18th, 2009
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21x5: The Devil Wears Nada
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... read more »
Air date November 15th, 2009
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21x6: Pranks and Greens
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... read more »
Air date November 22nd, 2009
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21x7: Rednecks and Broomsticks
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,... read more »
Air date November 29th, 2009
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21x8: Oh Brother, Where Bart Thou?
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... read more »
Air date December 13th, 2009
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21x9: Thursdays with Abie
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... read more »
Air date January 3rd, 2010
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21x10: Once Upon a Time in Springfield
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... read more »
Air date January 10th, 2010
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21x11: Million Dollar Maybe
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,... read more »
Air date January 31st, 2010
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21x12: Boy Meets Curl
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... read more »
Air date February 14th, 2010
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21x13: The Color Yellow
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... read more »
Air date February 21st, 2010
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21x14: Postcards from the Wedge
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... read more »
Air date March 14th, 2010
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21x15: Stealing First Base
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... read more »
Air date March 21st, 2010
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21x16: The Greatest Story Ever D'ohed
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... read more »
Air date March 28th, 2010
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21x17: American History X-cellent
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... read more »
Air date April 11th, 2010
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21x18: Chief of Hearts
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,... read more »
Air date April 18th, 2010
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21x19: The Squirt and the Whale
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... read more »
Air date April 25th, 2010
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21x20: To Surveil with Love
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... read more »
Air date May 2nd, 2010
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21x21: Moe Letter Blues
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... read more »
Air date May 9th, 2010
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21x22: The Bob Next Door
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... read more »
Air date May 16th, 2010
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21x23: Judge Me Tender
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... read more »
Air date May 23rd, 2010
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