If you're a filmmaker here's a silly idea:

Shoot 2 different versions of your film with major divergences (key plot points being different, different key characters dying, tone of the film being completely different - one very serious, one full of dark humor etc) and have the versions silently be screened simultaneously in cycles so people never know which one they are gonna get.
For example people going to the theater at 18:00 would see v1 but people viewing at 20:00 would see v2.
#film #idea