Invasion of the Body Snatchers (1978)

Invasion of the Body Snatchers is a paranoid classic, and also a profoundly strange movie. The pod people are taking over, and the only people who can stop them are... health inspectors? Just kidding, no one can stop them! Because the fatalism inherent to this version of the movie is a huge part of the appeal. Alongside its all-star cast, of course.