Hive Mind Query

Can you think of a story or two that relates to the chance to relive an event, or the different ways an event might have happened under slightly different circumstances?

My cousin is teaching a class on film as lit for high school age students, and she needs a story (preferably short story or at most novelette length) to read in asssociation with "Run, Lola, Run" - does not have to be related to the film, but rather to issues of storytelling and narrative (as per question above, which is the on