Title: S4 AU (link goes to tumblr)
Author: johnlockiseternal
Pairing: Sherlock Holmes/John Watson
Length: 17 tumblr posts
Rating: Not rated, contains 1 NSFW gif
Warnings: None
Verse: BBC
Author's summary: AU where S4 doesn’t happen at all, Sherlock hallucinates everything after Mary shoots him.

Reccer's comments: I'm not sure if there's a name for this kind of thing, but this is a story told through gifs of the series (plus a couple from other sources), with the author inserting their own subtitles. It's kind of a cross between a vid and a fic. It's short and sweet, but manages to pack in the full range of emotion, from the stomach swoops of flirty texting, loin-tingling teases of a consummation many years in the making, to a heart-in-throat confrontation and the heartfelt sighs of a happy ending. And all rendered in slick, high quality gifs with in-character dialogue. It's cute, sassy, sweet, and just great fun.

Editing to add: There is now a 1:25-minute fanvid version.