Sideshow Bob tries again for revenge against the Simpsons.

Homer loses his memory--and his family--when he drinks Moe's most potent libation, the Forget-Me-Shot, in an episode that spoofs "Eternal Sunshine of the Spotless Mind" and "It's a Wonderful Life."

Homer burns down Springfield's fast-food district. In order to float a bond issue to rebuild it, Mayor Quimby moves up election day, making Springfield's primary election the first in the nation. This causes the town to be overrun with reporters, candidates and pundits.

Flashbacks follow Marge and Homer back to their dating days, when she was a college student and he was working for his father to support her. Then Marge becomes smitten with a professor, so a sorrowful Homer turns to music--and invents grunge.

Homer and Marge celebrate Valentine's Day by going on the Tunnel of Love ride at a carnival, but they end up stranded when Bart pulls a prank involving gelatin. To pass the time, Homer tells the love story of Bonnie and Clyde, Marge tells her version of "Lady and the Tramp," and Bart tells the love story of Sid Vicious and Nancy Spungen.

A new kid at school named Donny works with Bart on his pranks. But when the pranks start to backfire, Bart wonders if he can trust his new accomplice. Meanwhile, the Simpsons get a fancy loaner car after Marge gets in an accident, and Homer falls in love with it.

Homer cheats on his diet, so Marge gets a reality show called "The Sneakers" to check up on him. Meanwhile, Bart and Lisa fear that a prank they played on Martin Prince had deadly consequences.

With Lisa's encouragement, Marge pursues her dream of becoming a ballerina. But when Marge auditions at the ballet academy, Lisa is invited to enroll. Unfortunately, Lisa becomes addicted to secondhand smoke from the other dancers. Meanwhile, Homer's beef-jerky operation runs into a snag.

The Simpsons take in a country singer Homer used to manage who owes back taxes to Springfield. She is now destitute, so the family tries to help her get back on her feet.

Bart joins the 4-H club and raises a calf to be a blue-ribbon-winning bull, but panics when he learns the bull will be slaughtered.

Lisa makes a film about her family that gets accepted by the Sundance Film Festival, and the Simpsons go to Park City, Utah, to attend.

Homer's mother, Mona, returns, but Homer is reluctant to trust her because she abandoned him so many times as a child.

Lisa receives Springfield's Entertainer of the Year Award, and Sideshow Mel narrates her history in showbiz in a wry spoof of "All About Eve."

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.

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.

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.

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.

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.

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.

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.

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.

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.