The way Veronica Cartwright described that whole scenario is hilarious. Makes perfect sense. One of the most admirable qualities of Scott on Alien was the way he took hold of the actors and knew he was going to have to make the situation tense to get genuine reactions.
I don't know, the thread title and the topic post are two different things to me. The most memorable quote in the franchise?
As others have said, by most memorable it's going to be something from Aliens.
"Game Over, man!"
"Get away from her, you bitch!"
"In the pipe, five by five."
"Not bad for a human."
"Hey Vasquez, have you ever been mistaken for a man?" "No, have you?"
"Is this gonna be a stand-up fight, sir, or another bug hunt?"
"Alright, we waste em! No offense."
"Hey, maybe you haven't been keepin' up on current events but we just got our asses kicked, pal!"
"Nuke the site from orbit, it's the only way to be sure."
"They mostly come at night, mostly."
Some of my favorites from Alien/Alien 3
"Right."
"Let's talk about the bonus situation."
"I admire it's purity. A survivor. Unclouded by conscious, remorse, or delusions of morality."
"This is rumor control, here are the facts!"
"You religious?" "Me? Shit no, I got a job!"
"CIGARETTES!"