Season 20

421
S20E01
Sex, Pies and Idiot Scrapes
Bounty hunter Ned is forced to scrap his partnership with Homer when the hapless layabout skips bail, and Marge mistakenly takes a job at an erotic bakery.
September 28, 2008
422
S20E02
Lost Verizon
Bart lands himself in trouble when he steals a mobile phone from Denis Leary and subsequently uses it to land the actor a comical film role. The troublemaker then leads his family to the ancient ruins of Machu Picchu after Marge confiscates the device and decides to use its GPS technology to track her son.
October 5, 2008
423
S20E03
Double, Double, Boy in Trouble
An irreverent take on the Prince and the Pauper. Bart enthusiastically trades lives with a wealthy lookalike after landing himself in trouble for triggering a rampage of vacuum cleaners, but finds the lavish lifestyle too much when he becomes the target of all his new friends' pranks.
October 19, 2008
424
S20E04
Treehouse of Horror XIX (18)
Springfield is the setting for parodies of Charlie Brown, It's the Great Pumpkin and Michael Bay's Transformers as Homer's vote on election day is misread by a renegade machine.
November 2, 2008
425
S20E05
Dangerous Curves
Homer and Marge remember the ups and downs of their marriage through a series of flashbacks, including the time they each began flirting with guests at a glamorous party - a situation that led to a food fight and an unexpected swim in the pool. /div>
November 9, 2008
426
S20E06
Homer and Lisa Exchange Cross Words
Lisa learns she is good at crossword puzzles and enters a city-wide contest. Homer discovers he has a flair for letting loved ones down so he opens Sweet Conclusions Break-Up Service, but lands himself in trouble with his daughter when he places a bet against her in the competition.
November 16, 2008
427
S20E07
Mypods and Boomsticks
Lisa struggles to become the proud owner of a Mypod, and Homer believes Bart's new Middle-Eastern friend Bashir is involved in a terrorist plot to destroy the Springfield Mall.
November 30, 2008
428
S20E08
The Burns and the Bees
Mr Burns wins a professional basketball team in a poker game at the annual billionaire's retreat. He decides to build a state-of-the-art facility in an attempt to lure fans, but the stadium site is on the last remaining bee colony in Springfield - prompting Lisa to lead a protest.
December 7, 2008
429
S20E09
Lisa the Drama Queen
Lisa lets her imagination run wild when she makes a new friend and they create a magical kingdom together called Equalia, complete with characters and plotlines. But they find themselves facing a nightmare when the boundaries between reality and fantasy are blurred. With the voice of Emily Blunt.
January 25, 2009
431
S20E10
Take My Life, Please
Homer is jealous when old classmate Vance Connor is inducted into the Springfield Walk of Fame. Lenny and Carl confess they fixed the result in favor of Principal Dondelinger - leading the hapless father to speculate on how his life would have changed had he won the ballot.
February 15, 2009
432
S20E11
How the Test Was Won
Bart gets a perfect score on a practice test for a national achievement test, which not only rattles Lisa, but it means Bart gets to attend a special party instead of having to take the actual test. Meanwhile, Homer must avoid injuring himself for an entire afternoon after failing to pay his insurance.
March 1, 2009
433
S20E12
No Loan Again, Naturally
In the episode, the Simpsons lose their house, but Ned Flanders buys it and offers to rent it back to them. However, when they turn out to be less-than-reliable renters, Flanders kicks them out. "No Loan Again, Naturally" was written by Jeff Westbrook and directed by Mark Kirkland.
March 8, 2009
434
S20E13
Gone Maggie Gone
Lisa infiltrates a convent in order to steal back Maggie who was accidentally taken in by nuns. While in the convent, Lisa uncovers a series of cryptic clues leading to a hidden jewel in Springfield.
March 15, 2009
435
S20E14
In the Name of the Grandfather
The Simpsons travel to Ireland so that Grampa can have a final drink at O'Flanagan's Pub - an old watering hole of his. But when the small town of Dunkilderry isn't quite what Grampa remembers it as, and O'Flanagans has become a rundown and empty pub, he and Homer decide to buy it and fix it up.
March 22, 2009
436
S20E15
Wedding For Disaster
After Marge and Homer's marriage turns out to be invalid, they decide to re-do their vows. But when Homer goes missing, Bart and Lisa smell something funny and investigate his disappearance.
March 29, 2009
437
S20E16
Eeny Teeny Maya Moe
Moe once again searches for love and falls for a woman named Maya over the Internet. However, when Moe meets Maya face-to-face, he discovers it's more like face-to-knee, as Maya is only three feet tall.
April 5, 2009
438
S20E17
The Good, the Sad and the Drugly
Bart falls in love with a charitable girl named Jenny, prompting Bart to behave in order to date her. Meanwhile, Lisa becomes depressed when she writes a report on Springfield's future.
April 19, 2009
439
S20E18
Father Knows Worst
Bart and Lisa start struggling in their academic and social lives at school and Homer starts monitoring them and forcing them to do better. Meanwhile, Marge discovers a sauna in the basement.
April 26, 2009
440
S20E19
Waverly Hills, 9021-D'Oh
When Marge learns Springfield Elementary is the worst school in the state, she and Homer rent an apartment in the upscale Waverly Hills school district so Bart and Lisa can attend a better school. Meanwhile, Homer moves into the rented Waverly Hills apartment and gets used to the bachelor lifestyle.
May 3, 2009
441
S20E20
Four Great Women and a Manicure
Marge and Lisa visit the nail salon where they engage in a spirited debate as to whether a woman can be smart, powerful and beautiful all at the same time and spin four tales of famous women featuring famous Springfield faces: Selma as Queen Elizabeth I.
May 10, 2009
442
S20E21
Coming to Homerica
When nearby Ogdenville’s economy crumbles due to tainted barley discovered in Krusty’s veggie burgers, the unemployed workers of Ogdenville flock to Springfield. After Mayor Quimby closes Springfield’s borders and enlists private citizens to help patrol them, Homer organizes a border patrol group.
May 17, 2009