Alien (1979)

Ripley: Micro changes in air density, my ass.

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

Ripley: Did you ever ship out with Ash before?
Dallas: I went out five times with another science officer. They replaced him two days before we left Thedus with Ash. Hmm?
Ripley: I don't trust him.
Dallas: Well, I don't trust anybody.

Ripley: Ash, that transmission... Mother's deciphered part of it. It doesn't look like an S.O.S.
Ash: What is it, then?
Ripley: Well, I... It looks like a warning. I'm gonna go out after them.
Ash: What's the point? I mean by the, the time it takes to get there, you'll... They'll know if it's a warning or not, yes?

Ripley: When we throw the switches, how long before the ship blows?
Parker: Ten minutes.
Ripley: No bullshit?
Parker: We ain't outta here in ten minutes, we won't need no rocket to fly through space.

Lambert: I can't see a goddamn thing.
Kane: Quit griping.
Lambert: I like griping.