The 1979 sci-fi classic is 'ALIEN, ' a horror/sci-fi movie directed by Ridley Scott and starring Sigourney Weaver. The movie follows the crew of a commercial towing spaceship as they investigate a distress call from an ALIEN spacecraft, only to find themselves in a fight for survival against a deadly ALIEN creature. The movie was a huge success, spawning several sequels and inspiring many other sci-fi films.