In this world, everything is rusty, subterranean, and leaks. The movie uses its future world as a home base and launching pad for the central story, which is set in 1990 and 1996, and is about a time traveler trying to save the world from a deadly plague (…). I’ve seen “12 Monkeys” described as a comedy. Any laughs that it inspires will be very hollow. It’s more of a celebration of madness and doom, with a hero who tries to prevail against the chaos of his condition, and is inadequate. This vision is a cold, dark, damp one, and even the romance [feels] desperate rather than joyous. All of this is done very well (…). But a comedy it’s not. And as an entertainment, it appeals more to the mind than to the senses.
Roger Ebert