Twelve Monkeys ★★★★½

The best time travel movie ever made, if you exclude Groundhog Day, which I do because that is really a film that illustrates the Everett many-worlds interpretation of quantum theory rather than the mechanics of time travel.

As with every other Terry Gilliam film, the entertainment comes from trying to distinguish which characters are sane and which are completely mad without being driven mad yourself. Brad Pitt puts in a suitably over-the-top performance while Bruce Willis actually acts, leaving you wishing that he would try that more often.