Christmas Episode i.e. Simpsons Roasting on an Open Fire, 'Tis the Fifteenth Season
Treehouse of Horror
Homer Gets A Wacky Job or Gets Into a Zany Situation i.e. Dancin' Homer, Deep Space Homer, Simple Simpson, many, many more
The Simpsons are a Bad Family i.e. There's No Disgrace Like Home, Brawl in the Family
Sideshow Bob Episode
Krusty Episode i.e. Like Father, Like Clown, The Last Temptation of Krust
Lisa Has An Ethical Dilemma i.e. Lisa Gets an "A", A Star is Torn, Lisa's Rival, Mr. Lisa Goes to Washington
Lisa is Sad i.e. Moaning Lisa, 'Scuse Me While I Miss the Sky, Lisa's Substitute
Homer and Marge's Marriage Is In Trouble! i.e. Life on the Fast Lane, The War of the Simpsons, Natural Born Kissers, Diatribe of a Mad Housewife
Clip Show i.e. Gump Roast, So It's Come to This: A Simpsons Clip Show, The Simpsons 138th Episode Spectacular
Flashback Episode i.e. The Way We Was, Lisa's Sax, Homer's Barbershop Quartet
Flashfoward Episode Lisa's Wedding, Bart to the Future, Future-Drama
Sibling Rivalry! i.e. On a Clear Day I Can't See My Sister, Bart vs. Lisa vs. 3rd Grade, Smart and Smarter
Mystery! i.e. Black Widower, Who Shot Mr. Burns?, The Great Louse Detective
Marge Episode i.e. The Twisted World of Marge Simpson, Homer Alone, All's Fair in Oven War
Bart's Crazy Antics i.e. The Crepes of Wrath, Boy-Scoutz N the Hood, Bart on the Road, Kamp Krusty
Bart Has An Ethical Dilemma i.e. Marge be Not Proud, Bart Gets an F, The Heartbroke Kid
The Simpsons Are Going To __________! i.e. Bart vs. Australia, The City of New York vs. Homer Simpson, The Regina Monologues
Springfield Gets Into Zany Hi-Jinx i.e. Marge vs. the Monorail, 22 Short Films About Springfield, $pringfield
Mr. Burns Episode i.e. Two Cars in Every Garage and Three Eyes on Every Fish, Rosebud, Fraudcast News
The Writers Tackle A Pressing Social Issue i.e. There's Something About Marrying, Much Apu About Nothing
Ned Flanders Episode i.e. A Star is Born-Again, Hurricane Neddy
Deals Mainly With Politics Episode i.e. Mr. Spritz Goes to Washington, Sideshow Bob Roberts
Apu Episode i.e. Homer and Apu, The Two Mrs. Nahasapeemapetilons, The Sweetest Apu

Skinner and/or Springfield Elementary Episode i.e. Grade School Confidential, The PTA Disbands, Sweet Seymour Skinner's Baadassss Song
Fleshing Out Secondary Character Episode i.e. Moe Baby Blues, Worst Episode Ever, This Little Wiggy, Sleeping with the Enemy
Grandpa and/or Old People Episode i.e. Old Money, The Old Man & The Key, Lady Bouvier's Lover
SLH/Snowball II Episode i.e. Dog of Death, Old Yeller-Belly, Bart's Dog Gets an F
Deals Mainly With Religion Episode i.e. Homer the Heretic, The Father, the Son, and the Holy Guest Star, Pray Anything
Non-THOH Trilogy i.e. Trilogy of Error, Simpsons Bible Stories, The Simpsons Spin-off Showcase

Marge Leads a Crusade i.e. Marge vs. Singles, Seniors, Childless Couples and Teens, and Gays; Itchy & Scratchy & Marge
Let's See How Many Guest Stars We Can Cram In An Episode i.e. Homer at the Bat, When You Dish Upon A Star, Homer and Ned's Hail Mary Pass
Itchy & Scratchy Episode i.e. The Day the Violence Died, The Itchy & Scratchy & Poochie Show, The Front
Homer Tries To Be A Good Father i.e. Saturdays of Thunder, Lisa's Pony, Hello Gutter, Hello Fadder, I, (Annoyed Grunt)-Bot
Look, It's A Long Lost Relative! i.e. Burns, Baby Burns, Oh Brother, Where Art Thou?, Mother Simpson
Springfield Denizen Woes i.e. A Milhouse Divided, Alone Again, Natura-Diddly, My Big Fat Geek Wedding
NOGGIN helped with this.
