Heaven's Gate, the San Diego-based cult that committed mass suicide in 1997 in hopes of hitching a ride on a UFO trailing a passing comet, were in many ways a surprisingly traditional Gnostic cult. But at the same time they were ultimately a product of Hollywood, particularly Hollywood science fiction franchises like Star Trek and Star Wars.
So it's no surprise they showed up in a number of Hollywood productions, some openly acknowledged, and in one particular instance, not so much.