Although it's not a movie, Alan Partridge deserves an honourable mention as it is probably the most quotable TV show ever produced, to such an extent that it has even generated its own genre of "Accidental Partridgeisms"
Don’t get me started. My brothers and I have got a WhatsApp group just for Partridgeisms that’s about ten years old now.
Not checked the foregoing, but Jack Nicholson in Chinatown. "To tell you the truth, I lied a little."
Bide your time and strike back when you're in a position of strength, even if you no longer need to strike back...
“As a bush whackin gorilla army we’re going to be doing one thing and one thing only………killin nazi’s”
“When you have to shoot…shoot.. Dont talk!….” Tuco, The Good, the bad and the ugly “Frying tonight” carry on screaming..
Prompted by watching Blazing Saddles last night: Taggart : I got it! I got it! Hedley Lamarr : You do? Taggart : We'll work up a Number 6 on 'em. Hedley Lamarr : [frowns] "Number 6"? I'm afraid I'm not familiar with that one. Taggart : Well, that's where we go a-ridin' into town, a-whompin' and a-whumpin' every livin' thing that moves within an inch of its life. Except the women folks, of course. Hedley Lamarr : You spare the women? Taggart : Naw, we rape the shit out of them at the Number Six Dance later on. Hedley Lamarr : Marvelous