Must-see movies are futuristic classics that shouldn't be missed. Of course, not every must-see is perfect. That's why we've rated them 1-5 on the patented "crunchy goodness" scale. Written by Sherilyn Connelly.
Vitals: A mathematician is obsessed with finding a pattern of numbers which (according to his oft-restated assumptions) will unlock patterns in nature, the stock market, and other things which need numbers to unlock them. He also suffers from really gnarly headaches, which probably has as much to do with staring at the sun as a kid (hello!) as with the numbers in his brain. Through it all, he's being pursued by Kabbalists and Wall Street types, and is going batshit crazy in general
Famous names: The first film by Darren Aronofsky, who would go on to heretofore untold levels of squick with his followup, Requiem for a Dream.
Crunchy goodness: 5
Memorable product tie-in: Every techno DJ alive has the soundtrack.
Sights you'll never unsee: Drill plus cranium equals super happy mirror splatter!
Design breakthrough: Many pre-DV indie films were shot in black and white for budgetary reasons, but Pi's gorgeous, high-grain chiaroscuro cinematography is vital to the mood; though it's never mentioned in the dialogue, I've always suspected the character is color-blind, as it feels like we're seeing the world through his eyes.