Alien
Alien mistake picture

Visible crew/equipment: When Kane is struggling on the table shortly before the alien rips through his chest, just before the first patch of blood appears, his T-shirt rides up and something strapped to his chest can be seen. This is some sort of pack containing fake blood that discharges onto his T-shirt. (Best viewed in slow motion.) (00:55:40)

Visible crew/equipment: Following the chest-burster scene, as the camera pans around the darkened corridors on the Nostromo just prior to Dallas ejecting Kane's body, what appears to be a boom mic is visible only for approximately two seconds to the left of the screen. (00:57:10)

Alien mistake picture

Visible crew/equipment: When Ripley is heading towards the Shuttle towards the end, just before she finds Jonesy, there is a POV shot where the camera is walking towards a ladder. If you look at the floor you can see the dolly that the camera moves on. (01:36:05)

Visible crew/equipment: When Ripley is in the escape pod and has the space suit on, she hits the button to open the door and blow the alien into space. In the shot just as the alien is getting sucked backwards, you can see the wire coming out of its back. (01:51:30)

Visible crew/equipment: After Ripley fails to shut off the auto destruct sequence, she runs through a corridor filled with gas. As she exits from the gas right before the shot cuts away we see her pass by a full sized light. Beside this light is the clear arm and head of a lighting crew member. (This is acknowledged on the DVD commentary).

wizard_of_gore

Character mistake: When Ripley interfaces with Mother for the first time and sees the special order, an instruction reads as "Insure return of organism" rather than "Ensure return."

More mistakes in Alien

Parker: It's a robot. Ash is a god damn robot.

More quotes from Alien

Trivia: Ripley abruptly yelling at Parker to "Shut up!" is not in the script. Fans and industry gossip have long speculated that this was Sigourney Weaver breaking character in frustration and she was in fact telling Yaphet Kotto to "shut up" so she can finish her lines. The sequels 'Aliens' and 'Alien 3' both feature scenes where one of the normally cooler-headed protagonists suddenly snaps at a ranting character to "shut up!" in apparent reference to this moment. (01:16:50)

TonyPH

More trivia for Alien

Question: I recently saw this film at a local cinema and I noticed that there was a scene missing from when I first saw this film as a kid. In the aforementioned scene, Dallas is on the main computer (Mother) trying to get information about how to destroy the Alien. The computer just keeps responding with "Can not compute." He finally asks "What are my chances" and still gets the same response. I was wondering if anyone remembered this scene and knows why its been removed?

Gavin Jackson

Answer: If I'm not mistaken, the scene you're talking about (where Dallas consults Mother before going into the vent) was removed from the Director's Cut version of the film (which did get its own theatrical release in 2003). Perhaps that's the version they showed. I couldn't find the scene in its entirety, but is this what you're referring to? https://m.youtube.com/watch?v=OaoQES6C9ok.

Bishop73

Yes that was the scene. It was longer of course.

Gavin Jackson

More questions & answers from Alien