It's the End of the World As We Know It, and I Feel Fine

Fandoms I put forth for apocalyptothon ficathon:


Dr. Suess fandom (The Cat In The Hat, etc.)
Doctor Who - Pete's world / AU
Fruits Basket
The Melancholy of Haruhi Suzumiya (always almost happens in canon but never does)
Princess Tutu
Temeraire series by Naomi Novik
Discworld series by Terry Pratchett
Jonathon Strange & Mr. Norrell by Susannah Clarke
Soon I Will Be Invincible by Austin Grossman
ANIMANIACS
Sailor Moon
Cowboy Bebop (solar-system-wide apocalypse, not the kinda-sorta apocalypse that caused everyone to leave Earth in the first place.)
Gargoyles
Avatar: The Last Airbender
Kill Bill
Spirited Away
How I Met Your Mother
Dollhouse
Blood Ties
Fight Club (predicted by canon)
Iron Man (movieverse)
Pride And Prejudice (movie or book)
Once Upon A Time In Mexico
A Nightmare Before Christmas



The bolded choices are the ones I really, really would love to read in fanfic.