Terminator Genisys didn’t just underperform at the U.S. box office—it also attracted an audience that skewed older. Maybe not surprising, for a film that rewards intricate knowledge of a movie from 1984. But which movie sequel relied the most on references to earlier films?

Please include a picture, poster, clip, or other image for your chosen movie. Thanks!

Top image: Star Trek Into Darkness not only borrows its villain from Star Trek II: The Wrath of Khan, but its entire climax as well.

Contact the author at charliejane@io9.com.