I’d never heard of these before, but kind of fascinating. (Someone thought I’d be interested because of Crazy Walls.)
Crazy Walls: screengrabs from media where obsessives create pinboards stringing together clues / Boing Boing
Crazy Walls on Boing Boing.
Cataloguing the walls covered in photos, newspaper clippings, string, etc by obsessive men in movies and TV shows. Because no one else seems to have done this yet.