Worst Episode of Each Season

[starman]

Season 1 - Bart the Genius
Season 2 - Dancin' Homer
Season 3 - Homer at the Bat
Season 4 - Whacking Day
Season 5 - The Boy Who Knew Too Much
Season 6 - Two Dozen and One Greyhounds
Season 7 - Two Bad Neighbors
Season 8 - Hurricane Neddy
Season 9 - The Trouble With Trillions
Season 10 - Viva Ned Flanders
Season 11 - Alone Again, Natura-Didilly
Season 12 - Homer vs. Dignity
Season 13 - Treehouse of Horror XII
Season 14 - Large Marge
Season 15 - I D'oh Bot
Season 16 - Treehouse of Horror XV
Season 17 - Haven't seen any particularly bad episodes yet
Season 18 - Springfield Up/Marge Gamer
Season 19 - Treehouse of Horror XVIII

[Inamon]

Season 1: Some Enchanted Evening
Season 2: Dancing Homer
Season 3: When Flanders Failed
Season 4: Marge In Chains
Season 5: Homer and Apu
Season 6: Round Springfield
Season 7: Scenes From The Class Struggle Of Springfield
Season 8: The Canine Mutiny
Season 9: Principle and The Pauper
Season 10: Sunday, Cruddy Sunday
Season 11: Alone Again, Natura-Diddly
Season 12: Dunno, so many...
Season 13: Homer The Moe
Season 14: Strong Arms Of The Ma
Season 15: Bart Mangled Banner
Season 16: Mobile Homer
Season 17: The Bonfire Of The Manatees
Season 18: G.I. D'oh
Season 19: He Loves To Fly and He D'ohs

[starman]

Crap, I forgot 'Strong Arms of the Ma'. That truly is one of the worst moments in the history of the show, if not, THE worst.