As the film that kickstarted the whole cycle of sci-fi horror in the 1980s, we are forever in Alien's debt; and for being awesome in and of itself, we absolutely must pay it the respect it's due. But, guys, sometimes a near-masterpiece can just be a near-masterpiece, and you don't need to give it full marks merely to recognize how important, or even how good, it actually is.
1979
Directed by Ridley Scott
Written by Dan O'Bannon, Ronald Shusett, David Giler, and Walter Hill
With Sigourney Weaver (Ripley), Tom Skerritt (Dallas), Veronica Cartwright (Lambert), John Hurt (Kane), Yaphet Kotto (Parker), Harry Dean Stanton (Brett), Ian Holm (Ash), Helen Horton (Mother), and Bolaji Badejo (the Alien)
Spoiler alert: joking, yes?