Ridely Scott had just made a movie called 'The Duelists' with Harvey Keitel, about guys in ye olde costume drama time having sword duels, then he saw 'Star Wars' and said 'wth am I doing making movies with Harvel Keitel in tight white pants and a twirly moustache fencing some bozo when I could be making movies like this?' And that's why he made 'alien', so that was his attempt at a big Star Wars blockbuster production, Blade Runner being the next.
edit:; he said this, not in these exact words iirc, on a doc I saw on tv years ago.
edit:
[quote = Secret Fawful]
Alien:
I like the creature. I think it's unique, and I do think that it is a revolutionary design. All of this goes down the toilet once I see the movie and see it in action. It's unintentionally hilarious and downright comical to me. It's a guy in a suit. This is the sort of thing I find cheesy enough in B movies, which I also love, but in Alien, I don't feel it works. I know that it's supposed to represent the human aspects of the creature, but it could have been done much better if it wasn't a guy in a suit. I like Aliens. I don't think that Aliens has guys in suits. If it did it wasn't nearly as apparent. Also, the way the Alien gets people in the film is freaking hilarious. There's no tension for me. It's not stalking them and hidden and seemingly intelligent like Predator the way people claim. It just shows up and kills. Tension gone. The scene where it gets Dallas is more like someone playing a prank and going BOOGIE BOOGIE! with its arms out than a killing machine. As soon as I saw that, the movie was ruined for me. I almost got back into it a bit, but then Ash became an android. An android with yogurt blood. It just didn't work for me. The android in Aliens didn't either; none of the androids in that universe do. Yogurt blood. No.[/quote]
I think this is a little unfair, about the only scene where the Alien blantantly looks like a guy in a costume to my eyes, is in the scene where he gets Dallas. Apart from that, it is very well realised and shot, we all know it is a guy in a suit as they did not have CGI or real aliens living on Earth like they do nowadays. But I think it is shot so well, bar that one scene, that you can quite easily suspend your disbelief and get into the movie. It's either that or disbelieve your suspenders and go back to wearing normal trousers, and i know what I would sensibly choose.