After all these episodes (and then some), you could cut them some slack. Hard to imagine they'd run out of material?!?!
Season 1
1. Simpsons Roasting on an Open Fire
2. Bart the Genius
3. Homer's Odyssey
4. There's No Disgrace Like Home
5. Bart the General
6. Moaning Lisa
7. The Call of the Simpsons
8. The Telltale Head
9. Life on the Fast Lane
10. Homer's Night Out
11. The Crepes of Wrath
12. Krusty Gets Busted
13. Some Enchanted Evening
Season 2
1. Bart Gets An F
2. Simpson and Delilah
3. Treehouse of Horror
4. Two Cars in Every Garage and Three Eyes on Every Fish
5. Dancin' Homer
6. Dead Putting Society
7. Bart vs. Thanksgiving
8. Bart the Daredevil
9. Itchy & Scratchy & Marge
10. Bart Gets Hit by a Car
11. One Fish, Two Fish, Blowfish, Blue Fish
12. The Way We Was
13. Homer vs. Lisa and the Eighth Commandment
14. Principal Charming
15. Oh Brother, Where Art Thou?
16. Bart's Dog Gets an F
17. Old Money
18. Brush With Greatness
19. Lisa's Substitute
20. The War of the Simpsons
21. Three Men and a Comic Book
22. Blood Feud
Season 3
1. Stark Raving Dad
2. Mr. Lisa Goes to Washington
3. When Flanders Failed
4. Bart the Murderer
5. Homer Defined
6. Like Father Like Clown
7. Treehouse of Horror II
8. Lisa's Pony
9. Saturdays of Thunder
10. Flaming Moe's
11. Burns Verkaufen Der Kraftwerk
12. I Married Marge
13. Radio Bart
14. Lisa the Greek
15. Homer Alone
16. Bart the Lover
17. Homer at the Bat
18. Separate Vocations
19. Dog of Death
20. Colonel Homer
21. Black Widower
22. The Otto Show
23. Bart's Friend Falls in Love
24. Brother, Can You Spare Two Dimes?
Season 4
1. Kamp Krusty
2. A Streetcar Named Marge
3. Homer the Heretic
4. Lisa the Beauty Queen
5. Treehouse of Horror III
6. Itchy & Scratchy: The Movie
7. Marge Gets a Job
8. The New Kid on the Block
9. Mr. Plow
10. Lisa's First Word
11. Homer's Triple Bypass
12. Marge vs. the Monorail
13. Selma's Choice
14. Brother From the Same Planet
15. I Love Lisa
16. Duffless
17. Last Exit to Springfield
18. So It's Come to This: A Simpsons Clip Show
19. The Front
20. Whacking Day
21. Marge in Chains
22. Krusty Gets Kancelled
Season 5
1. Homer's Barbershop Quartet
2. Cape Feare
3. Homer Goes to College
4. Rosebud
5. Treehouse of Horror IV
6. Marge on the Lam
7. Bart's Inner Child
8. Boy-Scoutz 'N The Hood
9. The Last Temptation of Homer
10. $pringfield (Or, How I Learned to Stop Worrying and Love Legalized Gambling)
11. Homer the Vigilante
12. Bart Gets Famous
13. Homer and Apu
14. Lisa vs. Malibu Stacy
15. Deep Space Homer
16. Homer Loves Flanders
17. Bart Gets an Elephant
18. Burns' Heir
19. Sweet Seymour Skinner's Baadasssss Song
20. The Boy Who Knew Too Much
21. Lady Bouvier's Lover
22. Secrets of A Successful Marriage
Season 6
1. Bart of Darkness
2. Lisa's Rival
3. Another Simpsons Clip Show
4. Itchy & Scratchy Land
5. Sideshow Bob Roberts
6. Treehouse of Horror V
7. Bart's Girlfriend
8. Lisa on Ice
9. Homer Badman
10. Grandpa vs. Sexual Inadequacy
11. Fear of Flying
12. Homer the Great
13. And Maggie Makes Three
14. Bart's Comet
15. Homie the Clown
16. Bart vs. Australia
17. Homer vs. Patty and Selma
18. A Star is Burns
19. Lisa's Wedding
20. Two Dozen and One Greyhounds
21. The PTA Disbands
22. Round Springfield
23. The Springfield Connection
24. Lemon of Troy
25. Who Shot Mr. Burns (Part One)
Season 7
1. Who Shot Mr. Burns? (Part Two)
2. Radioactive Man
3. Bart Sells His Soul
4. Home Sweet Homediddly-Dum-Doodily
5. Lisa the Vegetarian
6. Treehouse of Horror VI
7. King-Size Homer
8. Mother Simpson
9. Sideshow Bob's Last Gleaming
10. The Simpsons 138th Episode Spectacular
11. Marge Be Not Proud
12. Team Homer
13. Two Bad Neighbors
14. Scenes From the Class Struggle in Springfield
15. Bart the Fink
16. Lisa the Iconoclast
17. Homer The Smithers
18. A Fish Called Selma
19. The Day the Violence Died
20. Bart on the Road
21. 22 Short Films About Springfield
22. Raging Abe Simpson and His Grumbling Grandson in 'The Curse of the Flying Hellfish'
23. Much Apu About Nothing
24. Homerpalooza
25. Summer of 4 ft. 2
Season 8
1. Treehouse of Horror VII
2. You Only Move Twice
3. The Homer They Fall
4. Burns, Baby Burns
5. Bart After Dark
6. A Milhouse Divided
7. Lisa's Date With Density
8. Hurricane Neddy
9. El Viaje de Nuestro Jomer (The Mysterious Voyage of Homer)
10. The Springfield Files
11. The Twisted World of Marge Simpson
12. Mountain of Madness
13. Simpsoncalifragilistic - expiala(Annoyed Grunt)cious
14. The Itchy & Scratchy & Poochie Show
15. Homer's Phobia
16. Brother From Another Series
17. My Sister, My Sitter
18. Homer vs. the Eighteenth Amendment
19. Grade School Confidential
20. The Canine Mutiny
21. The Old Man and Lisa
22. In Marge We Trust
23. Homer's Enemy
24. The Simpsons Spinoff Showcase
25. The Secret War of Lisa Simpson
Season 9
1. The City of New York vs. Homer Simpson
2. The Principal and the Pauper
3. Lisa's Sax
4. Treehouse of Horror VIII
5. The Cartridge Family
6. Bart Star
7. The Two Mrs. Nahasapeemapetilons
8. Lisa the Skeptic
9. Realty Bites
10. Miracle on Evergreen Terrace
11. All Singing, All Dancing
12. Bart Carny
13. The Joy of Sect
14. Das Bus
15. The Last Temptation of Krust
16. Dumbbell Indemnity
17. Lisa the Simpson
18. This Little Wiggy
19. Simpson Tide
20. The Trouble With Trillions
21. Girly Edition
22. Trash of the Titans
23. King of the Hill
24. Lost Our Lisa
25. Natural Born Kissers
Season 10
1. Lard of the Dance
2. The Wizard of Evergreen Terrace
3. Bart the Mother
4. Treehouse of Horror IX
5. When You Dish Upon a Star
6. D'oh-In in the Wind
7. Lisa Gets an 'A'
8. Homer Simpson in: 'Kidney Trouble'
9. Mayored to the Mob
10. Viva Ned Flanders
11. Wild Barts Can't Be Broken
12. Sunday, Cruddy Sunday
13. Homer to the Max
14. I'm With Cupid
15. Marge Simpson in: 'Screaming Yellow Honkers'
16. Make Room for Lisa
17. Maximum Homerdrive
18. Simpsons Bible Stories
19. Mom and Pop Art
20. The Old Man and the 'C' Student
21. Monty Can't Buy Me Love
22. They Saved Lisa's Brain
23. Thirty Minutes Over Tokyo
Season 11
1. Beyond Blunderdome
2. Brother's Little Helper
3. Guess Who's Coming to Criticize Dinner?
4. Treehouse of Horror X
5. E-I-E-I-(ANNOYED GRUNT)
6. Hello Gutter, Hello Fadder
7. Eight Misbehavin'
8. Take My Wife, Sleaze
9. Grift of the Magi
10. Little Big Mom
11. Faith Off
12. The Mansion Family
13. Saddlesore Galactica
14. Alone Again, Natura-Diddily
15. Missionary Impossible
16. Pygmoelian
17. Bart to the Future