This film also developed an additional plot hole that took a long time to get stated: can the future be adjusted or not? Also inverted with Two-Fry in the pilot, however he does get the comment from Mal - which was Jayne's cue to blow his brains out.
In the Futurama episode "Raging Bender", the primary characters are talking in a motion picture theater, only to be scolded by two common robotic silhouettes.