15 of the best movie prequels ever

The Good, The Bad and the Ugly (1966)

Sergio Leone's third film in the Dollars trilogy relocates the action to the American Civil War, as Clint Eastwood's Blondie hunts for a fortune in Confederate gold in the face of competition from ne'er-do-wells Tuco (Eli Wallach) and Angel Eyes (Lee Van Cleef). In truth it's not a prequel so much as another film featuring Eastwood's archetypal Man with No Name – though there is a nod to the future films as Blondie gradually acquires the Man With No Name's iconic costume over the course of the film.