In 1998, not yet 30 years old, director Darren Aronofsky released Pi, his scrappy black-and-white debut. Clocking in at a manic 84 minutes, the film is as smart as it is darkly comedic, a feat considering nearly all those minutes are spent inside the deteriorating mind of a math genius named Max Cohen as he fumbles toward a unified theory of the universe. Even now, 25 years later, its brilliance is evidenced in its impact.