A 21 Jump Street/Men In Black crossover may sound like an idea that originates from a movie that is satirizing Hollywood, but it was a real thing. At the end of 2014, leaked emails from Sony revealed that the project was in the works, with the intention being for it to exist as a follow-up to both 22 Jump Street and Men In Black 3. In 2019 (around the release of Men In Black International),...