Homer's mother returns, and after being cleared of all charges, is re-imprisoned on a technicality.

Homer realizes how selfish he is after he spends all the family's Christmas money on a present for himself. He becomes the nicest guy in town, making Ned Flanders jealous.

When Marge discovers Homer has remortgaged the house to help Moe's bar, she takes over as landlady. Little does Homer know, Moe and Marge are a match made in pub heaven.

Mr. Krupt is the school’s new gym teacher and introduces Bart and the kids to “BOMBARDMENT!” Bart’s attempt to get back at the new gym teacher results in the destruction of Groundskeeper Willie’s shack and the family takes him in. Lisa decides to make Willie the focus of her science fair project and tries to turn him into a “proper gentleman” with surprising results. Meanwhile, Homer has ruined his last pair of blue pants and attempts to generate interest in them so the manufacturer will start making them again.

Bart has to see a psychiatrist after he starts a panic at school by telling a story about a murderous cafeteria worker. Meanwhile, Lisa tries to civilize Cletus Spuckler's hillbilly children, with mixed results.

Bart goes from hero to goat on his Little League team after an error in the championship game. Meanwhile, Homer falls asleep on a bed in a department store. When he's awakened, he raves about the mattress and is given a job as a salesman.

Sideshow Bob tries again for revenge against the Simpsons.

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.

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.

When the adjustable rate on the Simpson couple's mortgage resets at more than the pair can afford, they must sell their house. Good Samaritan Ned Flanders buys the house and rents it out to them at an affordable rate. But Homer pushes his luck too far when he takes advantage of Ned's generous landlord duties.

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.

After learning that he is suffering from multiple illnesses and has only a few weeks to live, Mr. Burns becomes distraught by the town’s less-than-sensitive reaction to his announcement.

Following an unexpected turn of events, Bart finds Mr. Burns weak and vulnerable in the wilderness and secretly takes him into the Simpsons’ home.

But when Homer and Marge learn about their new houseguest, they decide it’s payback time, and Lisa, determined to stand up for Mr. Burns, learns that old habits die hard.

The Simpsons are evicted from Springfield and join an off-the-grid community outside of town.

But when Homer and Marge try to sneak back into Springfield, they are welcomed with hostility from their former friends and neighbors and begin to appreciate their new and more accepting home.

Mr. Burns replaces all of Springfield Power Plant's employees with robots (guest voice Brent Spiner) but decides to keep Homer as the sole human worker. With unemployment at an all-time high and mechanical arms operating the workplace, Springfield becomes a dismal and humorless place. But when Homer's machine-programmed peers start to turn on the community and his former real-life employees come to the rescue, they all realize that robots can't replace human friends.

Homer is shocked to discover that his bowling teammate is an accountant for Fat Tony and his mob. When Fat Tony gets jury duty, he appoints Dan as the temporary don of the mafia. Meanwhile, Lisa adds insects to her vegetarian diet after she passes out in the middle of a saxophone solo, but starts questioning her decision when bugs start pleading for mercy in her dreams.

When Marge tries to buy Homer snack cakes for their anniversary, she winds up meeting a married man who shares a common love of British Television. Ignorant of all, Homer attempts to secretly construct a romantic anniversary train in the Simpsons back yard.

Homer is recruited as a World Cup referee after Lisa extols his integrity on the youth soccer field in a Springfield Elementary speech contest. But when the Simpsons travel to Brazil (again), Homer finds his honesty tested by one of South America's slickest gangsters in the soccer match-bribing business.

When Lisa learns Springfield's anthem was stolen from another town she writes a replacement. Meanwhile, Homer learns the meaning of "Wide Pride".

When a modernized Springfield Elementary has a technical meltdown, Lisa transforms it into a Waldorf school. Meanwhile, Groundskeeper Willie becomes the coach of the mathletes.

Sanjay passes his stake in the Kwik-E-Mart to his millennial son, Jay, who turns it into a hip, health food market against Apu’s insistence on tradition. Bart, whom Homer had convinced to give up pranking, is called upon to return to his trickster life and take down the new store.

All of the fast food restaurants in Springfield go healthy, forcing Homer to turn to the last bastion of greasy food for comfort.

Everybody is now horrified of clowns after Bart's prank using clown masks, which also causes Krusty to lose his job. He attempts a comeback as a dramatic actor in the play "The Salesman's Bad Day", with Llewellyn Sinclair as his director.

When Marge and Homer leave Grampa to baby-sit the kids, some little green army men trigger a PTSD episode, sending the family on a journey to Grampa's past and the time period when he was a post-war toy model.

Homer tries to reunite a mechanical band from his youth, but film and TV creator J.J. Abrams gets ahold of them first.

Grampa finds himself in a pickle when his hidden hamburger past comes back to "ketchup" with him.

When Milhouse's Dad, Kirk, takes exception to a school history lesson that paints one of his ancestors in a bad light, Kirk goes on a crusade to censor and control the school curriculum -- a crusade that Homer co-opts for fun and profit.

When Groundskeeper Willie is kidnapped to Scotland, Bart and the Simpsons follow - only to discover that what awaits is Homer's worst nightmare.