Both a sci-fi and a horror classic

Rating: 10/10 (3 March 2007)

A true horror classic. Claustrophobic setting, cast of lesser-known but great actors, slowly building suspense, and terrific gore effects. The tension amps up so well that jump scares aren't needed for the movie to be frightening, and the paranoia that develops feels real and just as terrifying. A great story, because it doesn't reveal everything and it doesn't have to - it leaves a lot up to the audience's interpretation, and remains mysteriously ambiguous most of the time. Because you don't know who gets infected and when, the film is even more suspenseful, as the audience is in the same position as the characters. And the ending, while hopeless and depressing, fits the film perfectly. Plus, the makeup effects in this film are outstanding and just add to the pure shock of the scenes they're in. One of the top sci-fi/horror hybrids ever.