12 Monkeys

Add time travel, apocalyptic conspiracy and Bruce Willis together and you have the recipe for this sensational science fiction film.
The film depicts a dystopian future where humans have been forced to live underground. We learn a biological virus was released across the world in 1996-7 and contaminated the Earth's surface, killing billions. We move on to sometime in the future, where scientists have come up with an imperfect form of time travel, and a convicted criminal by the name of James Cole(Willis) is volunteered to travel back to 1996 in an effort to collect information about the virus.
Time travel is a favoured science fiction plotline, some do it well and some end up being absolute bores.
Thankfully, 12 Monkeys is the former.
Brad Pitt plays a man by the name Jeffrey Goines, who we first meet in a mental asylum in 1990. Goines reminds me of Heath Ledger's Joker, who I describe as a remarkably intelligent but insane man. Pitt is perfect in the role, finding an almost perfect balance of the intelligence and insanity that makes Goines such a sensational character. His performance earned him a Golden Globe for Best Supporting Actor, and a nomination for an Academy Award in the same category.
The plots unravel as the film continues, as we get to witness the "Butterfly Effect" brought on by Cole's assignment, and his actions in the past.
It is a film that is easy to miss, but if ever there's a film you go out of your way to see, make it this one. It's a gripping adventure through time and (potentially a long bow here) the effect a tiny bit of faith can have on at least one person's world.

12 Monkeys: 124 minutes (1995)