Aliens:
"I say we take off, and nuke the entire site from orbit. It's the only way to be sure"
"Hudson: Hey Vasquez, have you ever been mistaken for a man?
Vasquez: No. Have you? "
"We're on an express elevator to hell; going down!"
"We got tactical smart missiles, phase-plasma pulse rifles, RPGs, we got sonic electronic ball breakers! We got nukes, we got knives, sharp sticks... "
"Hicks: I like to keep this handy... for close encounters.
[cocks pump-action shotgun]
Frost: I heard *that.* "
Although I do have a certain affection for the Yahoo Serious film: "Young Einstein":
"Prostitute: What have you got in your pocket big boy?
Albert: It's a compass"
"Now all I have to do is split this atom... where did I put that chisel?"
"[Prostitute and hotel receptionist arguing]
"ask him" - "no, you ask -go on"
Prostitute:"Albert... How come Newton's theory doesn't account for Galileo's law?"
Albert: With a multitude of different simultaneities within the universe how can any gravitational effect be suddenly everywhere at the same time.
Hotel receptionist "See - told you"