Season 22 of The Simpsons began with a parody of High School Musical. Season 22 aired during the 2010 - 2011 TV season.
"Elementary School Musical" - September 26, 2010
Marge sends Lisa to a performing arts camp where artsy counselors (guest voices Jemaine Clement and Bret McKenzie of Flight of the Conchords) and fellow musically inclined campers (guest voices Lea Michele, Cory Monteith and Amber Riley of Glee) inspire her to embrace her creative side. After she returns to Springfield, Lisa becomes restless with her ho-hum suburban lifestyle and catches the first bus to Sprooklyn in hopes of reconnecting with her inner hipster.
"Loan-a-Lisa" - October 3, 2010
In search of an altruistic business venture, Lisa takes investment advice from Nobel Prize winner Muhammad Yunus (guest-voicing as himself). Then to show Nelson that an education is invaluable, Lisa introduces him to the well-educated and successful creator of Facebook, Mark Zuckerberg (guest-voicing as himself), only to find out that he dropped out of school.
"Money Bart" - October 10, 2010
Lisa coaches Bart's Little League team to beef up her extracurricular-activities resumé, but her academic approach to the game takes some of the fun out of it for Bart. Baseball great Mike Scioscia and statistician Bill James have voice cameos.
"Treehouse of Horror XXI" - November 7, 2010
In "War and Pieces," the first of three spine-tingling tales, when Marge encourages Bart and Milhouse to try playing wholesome, classic board games, the best friends discover that board games aren't boring after all when they find themselves playing a real life game. The supernatural spells continue in "Tweenlight," when Lisa becomes smitten with mysterious new student, Edmund (guest voice Daniel Radcliffe), only to discover he is a vampire. After Lisa and Edmund run away to "Dracula-la Land", it's Homer to the rescue as he tries to to save her before she becomes one of the undead. In the final frightening fable, "Master and Cadaver," Homer and Marge set sail on a romantic second honeymoon, but are interrupted when they rescue a castaway named Roger (guest voice Hugh Laurie) and learn the story of his deadly escape.
"Lisa Simpson, This Isn't Your Life" - November 14, 2010
Lisa learns that Marge was once a good student whose grades slipped when she became distracted, and Lisa fears she'll meet the same fate. So Marge makes a deal to allow Lisa to attend her dream school, and Lisa learns a lesson about family and altruism. Meanwhile, Bart turns the tables on Nelson and inadvertently gains a reputation as a bully.
"The Fool Monty" - November 21, 2010
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.
"How Munched is That Birdie in the Window" - November 28, 2010
Bart nurses a wounded pigeon back to health, but before Homer can enter the bird in a race, Santa's Little Helper swallows him. NASCAR racer Danica Patrick and Rachel Weisz have voice cameos.
"The Fight Before Christmas" - December 5, 2010
It's beginning to look a lot like Christmas in Springfield, but while Marge gets in the holiday spirit, it's bah humbug for the rest of the family. Marge writes a letter to Martha Clause (guest voice Martha Stewart) asking for help. Martha comes to the rescue and transforms the house into the North Pole chalet Marge has always dreamed of, but when Homer and the kids are absent from the perfectly trimmed home, she realizes what makes the holidays special. Meanwhile, the Simpsons get ready to sneak away for a Hawaiian holiday, but surprise visitors, including Katy Perry (guest-starring as herself in a special live-action sequence featuring the Simpsons as puppets) delay their getaway.
"Donnie Fatso" - December 12, 2010
Homer (Dan Castellaneta) spends New Year's Eve in the Springfield Penitentiary after getting caught bribing an official. An FBI investigator (guest voice Jon Hamm) offers to reduce his jail time if Homer agrees to go undercover as an informant to investigate Fat Tony (guest voice Joe Mantegna). When Homer develops a special bond with Fat Tony and his family, he becomes conflicted between his obligation to the government and his loyalty to his new family.
"Moms I'd Like To Forget" - January 9, 2011
After the fourth graders and fifth graders engage in a heated dodgeball battle, Bart discovers that one of the fifth graders has the same mysterious scar on his hand. Puzzled by the matching blemishes, Bart tries to understand why and how he got it, leading Marge to explain that seven years ago, she and her girlfriends formed the "The Cool Moms," a tight-knit group of moms who set playdates for their young boys. Inspired to reconnect with the women, Marge's social life soon becomes recharged, but when Bart's playdates stop being fun, he attempts to break up the club, and Marge finally remembers why she left the group in the first place.
"Flaming Moe" - January 16, 2011
Smithers helps Moe transform his dingy pub into "Mo's" and it quickly becomes Springfield's local gay hangout and his new patrons teach him a lesson in acceptance. Meanwhile, Principal Skinner becomes smitten with music teacher Ms. Juniper (guest voice Kristen Wiig). He uses Bart to get close to her and her daughter, Melody (guest voice Alyson Hannigan).
"Homer the Father" - January 23, 2011
Homer becomes obsessed with "Thicker than Waters," a 1980s family sitcom written by David Mamet (guest voicing as himself), and models his parenting skills after the show's sensible father much to the chagrin of Bart, who desperately sets his sights on a brand new dirt bike. But when Homer insists that Bart must earn the dirt bike, Bart takes matters into his own hands. Later, James Lipton (guest-voicing as himself) conducts an interview with a television cast on Inside the Actor's Studio.
