It's been hailed as one of the best independent films of all time (and made for just $7,000, one of the cheapest), and there's no question Primer is among one of our favorites. The brainchild of writer, director, producer, editor, composer and star Shane Carruth is so unique mainly due to its core objective: to tell a believable story of two friends who accidentally create a time machine.
With a razor thin-budget, mathematical and physical jargon pouring out of every scene, and a plot twist that we're happy to wager nobody will understand on their first viewing, Primer is simply a different breed of sci-fi. It's also one of the only films that tries to give a scientific explanation for how time travel works.
Stumbling onto time travel seems most likely in the real world, so Primer could be seen as the most accurate film in our entire list. Which is terrifying.