Homer and Marge try to spice up their love life and are caught baring it all in public. Bart and Lisa discover an alternate ending to Casablanca.

When Reverend Lovejoy subjects the congregation to an extended Bible reading, the Simpsons fall asleep and have dreams based on Bible stories.

Mayor Quimby flees Springfield, leaving the town chapter of Mensa in charge. As the group's new power goes to their heads, they take their utopian plans too far and the townspeople revolt.

Due to overuse of fertility medication, Apu and wife Manjula give birth to octuplets. Desperate for money, Apu loans the babies to an unscrupulous carny promoter, then needs Homer's help to get them back.

A "Behind the Music"-style look at the Simpsons, narrated by VH1's Jim Forbes, shows their rise to stardom--and the "private hell" that followed.

Lisa falls for the teenaged leader of a militant environmentalist group and tries to impress him by living in Springfield's oldest tree in order to keep it from being cut down.

Homer's rush to the hospital to reattach his thumb, Lisa's rush to school to win the science fair, and Bart's run-in with an illegal fireworks scheme are interconnected in a parody of Go and Run Lola Run.

When Homer refuses to pay a five dollar airport tax to fly to Delaware, the family is forced to ride in a livestock car of a train instead. There they meet a singing hobo who tells three tall tales: Homer as Paul Bunyan. Lisa as Connie Appleseed, a parody of Johnny Appleseed. Bart as Tom Sawyer with Nelson as Huckleberry Finn.

A jaw injury from colliding with a new town statue turns Homer into a better listener while recuperating with his jaws wired shut, but once the wires come off, Homer does not go back to being loud and obnoxious and Marge becomes starved for thrills.

Homer disappoints Lisa on her birthday when he gives her a thoughtless present. He realizes that he knows little about her and decides to hire private detective Dexter Colt to spy on her. Colt compiles a report, the information from which helps Homer bond with his daughter. However, Colt soon demands to be paid $1000, which Homer refuses. In retaliation, Colt vandalises an animal research lab and steals all the animals, leaving behind several clues that implicate Lisa. Homer and Lisa go on the run as fugitives and end up at a circus, where they meet Colt. He tries to kill Homer, but Lisa saves him. Later, Colt is arrested and Lisa exonerated. She finally receives the present she wanted from Homer.

Marge gets her kitchen remodeled and the dishes she makes inside it get rave reviews. The suggestion of Ned Flanders leads her to enter a cooking contest. However, Marge realizes the competition is harder than it seems. Meanwhile, Bart finds Homer's vintage Playdude magazines and decides to adopt the lifestyle he sees within the articles.

Bart fakes his own kidnapping to get out of being punished for going to a rap concert, but the ruse goes too far when Milhouse's father is implicated as the kidnapper and Chief Wiggum sees this as an opportunity to make a name for himself as a competent police officer.

Through Professor Frink's future machine, Bart and Lisa see their lives in the year 2013, where Bart steals Lisa's chances at going to an Ivy League school in order to impress a skater girl named Jenda while Homer (now separated from Marge and living in an underwater apartment) fights Krusty the Clown after Marge begins dating him.

The family attends "Stab-A-Lot: The Itchy and Scratchy Musical." The musical's director is a graduate of Springfield Elementary and Principal Skinner puts his foot in mouth when he makes sexist comments about her education and that of women in general. He tries to make the situation better, but only buries himself deeper and deeper until he is fired and replaced by Women's Educational Expert Melanie Upfoot. The first thing she does is split the school into girls and the boys. Lisa dislikes the way girls are being taught math and she ventures over to the boy's side of the school in search of a challenge. Disguising herself as Jake Boyman she starts attending the boy's school but while she finds the math problems more interesting, it is being a boy that is a greater challenge.

When Bart ends up the only guest at Nelson's birthday party, the bully decides he's his best friend and goes about protecting Bart in a parody of "Goodfellas." Meanwhile, Homer reads Lisa to sleep and debates on whether to reveal the book's sad ending to her.

Marge opens a gym for real women because she's disenchanted with Springfield's snooty, glitzy L.A. Body Works. Her gym, Shapes: A Gym for Women, is a huge success, launching a chain that makes Marge rich and famous. But Homer fears Marge will leave him for someone more attractive and goes to extreme lengths to try to save his marriage.

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.

The fourth grade students of Springfield Elementary School decide to spike Ms. Krabappel's coffee in order to teach her a lesson after she takes away their cell phones. She is fired by Principal Skinner, who hires a new teacher named Zachary Vaughn. Although Vaughn is a hip young teacher who impresses the students, Bart is plagued by guilt and tries to get Ms. Krabappel hired back.

The men and boys in Springfield become obsessed with Ultimate Punch Kick and Choke Championships, a violent sport where fighters inflict severe pain on each other. When Marge and her friends stage a protest against the sport, the show's promoter embraces the controversy and challenges Marge to a match, promising to shut down the competition if she wins. She begins to train with rhythmic gymnastics, but her family step in and get her professional martial arts help to give her a real chance at winning.

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.

Krusty grudgingly adds a pretty, singing cohost named Princess Penelope to his show in order to attract more female viewers. Girls love her, and ratings improve, but Bart and Milhouse want to get the show back to the way it was. The situation gets more complicated when Krusty and Penelope fall in love and decide to get married. Meanwhile, Homer, Lenny, and Carl consider working at a competing nuclear plant when Mr. Burns cuts off their daily doughnut service.

When Smithers transforms Moe's pub into a refined and trendy lounge, the establishment becomes Springfield's local gay hangout; Principal Skinner falls for the new, free-spirited music teacher (Kristen Wiig).

Marge takes Bart and Lisa on a weekend excursion, and when an unexpected restaurant detour awakens their taste buds, fellow foodies Amuse Bruce and Fois Garth (guest voices Tim Heidecker and Eric Wareheim) inspire them to start their own food blog, “The Three Mouthketeers.”

A "cool family" from Portland moves in next door to the Simpsons. Homer is desperate to befriend them, while Marge is skeptical, thinking that being cool is not all it's cracked up to be.

Homer's obsession with the TV show "Storage Battles" leads the family to discover Grampa's past identity as "Gorgeous Godfrey," the most feared, villainous man in pro-wrestling history

Homer has a mid-life crisis, takes up bass guitar and forms a cover band with some of the other dads in town. But the band's modest early success is soon overwhelmed by the breakout potential of their most unlikely star, Apu.

Chief Wiggum is mistakenly delivered a military jet pack, which he gleefully accepts and uses in order to fight crime. But when the jet pack crashes into the church, the congregation, led by Marge, must resort to gambling and counting cards in order to collect money to repair the church.

Homer gets roped into coaching the kids' lacrosse team with Milhouse's dad, Kirk, who is in desperate need of a friend. When Kirk gets too clingy, Homer vents about how much of a loser he is. Kirk overhears his rant and disappears, right when the team needs him most: the championship game.

Mr. Burns tries to relive his glory days and crosses paths with a mysterious music mogul. After being conned by him and reduced to bankruptcy, Mr. Burns seeks revenge on the Music Producer with the help of Homer, Bart, rapper Jazzy James and the mogul's ex-wife, Praline. Also, Lisa is courted by the richest kid in town, Smithers begins a perilous journey and Marge opens an obscure boutique store.

Marge and Homer's marriage is tested when they travel to a tropical island to compete for a million dollars on Marge's favorite reality competition show.

Krusty reveals the untold story of his past in his movie "The Sands of Space". While working as personal assistants on the movie, Bart and Lisa learn about the early years of their parents' relationship.

In a book-themed trilogy, Marge's resentment takes monstrous form, Lisa tries to save the planet through murder and Homer learns he's not the man he thought he was.