So I'm a fan of Doctor Who. I'm also a fan of BBC's Sherlock. Which means that naturally, I'm a fan of Wholock. What's Wholock you ask? It's when fandoms collide and imagine crossovers between the two shows.
Then there's really out of canon stuff, that's still amazing.
The fanfics are where things start to get really weird, but let's be honest, that's sort of what fanfic is for.