Amazon.com Essentials: A landmark of science fiction and horror, Alien arrived in 1979 between Star Wars and The Empire Strikes Back as a stylishly malevolent alternative to George Lucas's space fantasy. Partially inspired by 1958's It! The Terror from Beyond Space, this instant classic set a tone of its own, offering richly detailed sets, ominous atmosphere, relentless suspense, and a flawless ensemble cast as the crew of the space freighter Nostromo, who fall prey to a vicious creature (designed by Swiss artist H.R. Giger) that had gestated inside one of the ill-fated crew members. In a star-making role, Sigourney Weaver excels as sole survivor Ripley, becoming the screen's most popular heroine in a lucrative movie franchise. To measure the film's success, one need only recall the many images that have been burned into our collective psyche, including the "facehugger," the "chestburster," and Ripley's climactic encounter with the full-grown monster. Impeccably directed by Ridley Scott, Alien is one of the cinema's most unforgettable nightmares. --Jeff Shannon
Amazon.com Essentials: An interesting feature of Alien, Aliens, Alien 3, and Alien Resurrection, worth watching together if only for the chance to see how different directors handle essentially the same idea. The results are decidedly mixed. Ridley Scott's Alien is the most traditional of the bunch, essentially a haunted-house picture set on a space freighter, where a monster is picking off crew members one by one. James Cameron's Aliens is the all-out adrenaline bath, a pulse-pounding action thriller from start to finish. It plays a little like a Western in outer space, where the settlers are waiting for a cavalry that never comes--and the Indians are acid-veined aliens. And David Fincher's Alien 3 is the rock-video version, in which substance and storytelling are sacrificed to editing and imagery, as the aliens attempt to take over a space penal colony. --Marshall Fine