"Look both ways, friends: it’s time to open those sliding doors on the days of future past (AKA yesterday). Life is never over in a flash—it is, in fact, a never-ending story. Make some space, take some time to bring coherence to the task of listing your favorite films with alternate realities, parallel timelines and verse-jumping. Which film will be the one, the ultimate multiverse movie? It’s a paradox of parallels, so stay tuned, because you’ve got a blind chance of being spirited away beyond this dark city. Anyone fancy a bagel?"

I wanted to really focus on multiverse-type movies, not time travel changing time movies, or time loops, or movies where a person goes into a fantasy world (maybe Pleasantville is pushing that rule). Doppelgänger and Another Earth are almost their own "two duplicate earths" genre, but I think they meet the spirit better than say Wizard of Oz or Tenet.