Alien / Aliens DVD £3.83 at Asda
Alien is the first movie of one of the most popular sagas in science fiction history, and introduces Sigourney Weaver as Ripley, the iron-willed woman destined to battle the galaxy's ultimate creature.
The terror begins when the crew of the spaceship Nostromo investigates a transmission from a desolate planet and makes a horrifying discovery - a life form that breeds within a human host. Now the crew must fight not only for its survival, but for the survival of all mankind.
In this action-packed sequel to Alien, Sigourney Weaver returns as Ripley, the only survivor from mankind's first encounter with the monstrous Alien. Her account of the Alien and the fate of her crew are received with skepticism - until the mysterious disappearance of colonists on LV-426 lead her to join a team of high-tech colonial marines sent in to investigate.