made in 1979 and until this day no movie of the genre has come close to being a good atmospheric and at points terrifying.
Sigourney Weavers performance is just outstanding she makes you believe in the unbelievable, the director really has created a cinematic masterpiece that people have tried to repeat for decades and failed a must see to any movie sci fi /horror fan.
Veronica Cartwright, Harry Dean Stanton, John Hurt and Tom Skerritt make up the perfect cast of supporting actors.
the fact this movie doesn't have a 10 on imdb just shows how hard people are to please these days not many movies are this good and any movie that is 80% as good as this would be worth 2 hours of my life any day.