I saw the original when it came out in our local theater. It was scary and Sigourney Weaver was hot. It was weird because about all the known, albeit journeymen actors, got killed pretty early, starting with Tom Skerrit, who was probably the best known.
I saw Alien with my sister and brother in law, who was at that time her boyfriend, I think. The scariest movie I had ever seen till that point, by far.