Aliens
There is literally no competition. Every scene has at least 1 classic line. Aliens is also the gold standard reference used by all action movies since.
It’s a dry heat
Nuke it from orbit
There goes our salvage guys
You got the duty, open that bag
Mostly
Another version I’ve heard is “When you suspect a conspiracy you often only find incompetence”
We call those Clag nuts or Dangle berries.
Only boring people get bored.
Utter nonsense but it was said to my boy by a junior school teacher. Was an interesting conversation when I talked to her at parent teacher day.
The “Mostly” thing is the most famous quote from Aliens.
The movie quote for “its a dry heat” is from Aliens but I think it is a common phrase used in places like Arizona.
I probably didn’t pick the most well known ones, but watch the film (which is always worth doing) and you’ll see.
“Get away from her you bi tch”