When Ridley Scott wrote this movie, I'm not sure if he had it in his mind as a singular film. Now, 30 years on, the film has several spin-offs, but none can be as good or as impacting as the original Alien movie. A team of astronauts investigate a distress signal coming from a remote planet. When they land, what they find is terrifying in itself, but when a crew member comes back with something attached to his face, its gonna get a whole lot worse.. Featuring suspense and tense never before seen in movies, this is a must-see and a must-buy for any sci-fi fan. Personally, Its one of my favourite series of films, and this is the one that kick-started it.