Also starring Denzel, this 2004 remake of a 1962 classic became a classic in its own right. Directed by Jonathan Demme, the movie involves Major Bennett Marco (Washington), a Gulf War veteran who can’t shake the feeling that his head has been seriously messed with. To clear things up, he reaches out to his former comrade, the wealthy Raymond Shaw, who is running for president. Ultimately we learn that Marco and Shaw are part of a conspiracy by factions of the government to create brainwashed sleeper agents (something our government actually tried to do). It’s a great, creepy flick—required viewing, honestly. I’d recommend the original too.