What's a random line from a movie that fans of it will instantly know?

Great Scott!

"My friends, you bow to no one."

Have to fight through the tears during that scene sometimes.

I saw it in my head just reading it. Absolutely moving.
I can't get through ::: spoiler (other scene) Sam's monologue ::: With dry eyes either. That speech has kept me going, so many times. I've even posted it in various places on Lemmy as a counter to the sheer hopelessness and defeatism (understandably) pervading a lot of threads.
I often consider getting it wholly or partially inscribed on me.

Hasta la vista baby.

Hello there

We’re gonna need a bigger boat.

Snakes. I hate snakes.

Bring out the gimp.

Of course I know him! He’s me!

Sssssmokin’!

I understood that reference.

Life, uh, finds a way.

Surely you can’t be serious. I am serious. And don’t call me Shirley.

Also same movie: Today I picked the wrong day to stop sniffing glue.

"It really tied the room together."

...and this guy peed on it !

There is no spoon.

Inconceivable!

I don't think that word means what you think it means.

Khaaaaaaaaaaaannnnnnnnnnnnn!

Shut the fuck up Donny.

I am the Walrus

Yeah, well, you know, that's just, like, your opinion, man.

He's crackin'.

Alternate challenge: Find a line of more than just a few words from Holy Grail that won't be recognized.

Don't even need a few words, "Elderberries".
Edited for clarity.
- Still doesn't work. Elderberries are synonymous with the Holy Grail, at least in places where elderberries aren't common.
"What is your favorite color?" is the best I can do.
- Even this depends on diction.
  "What is your favorite color?" - School teacher.
  "WHAT- is your favorite color?" - Bridge Keeper
"Who goes there?" and "It's only a model" could work without any more context. But I think I would go with "Oh, don't be such a baby" even with context I think lots of people won't immediately recognize this.
She's got huge tracts of land
My best efforts from the script, but it ultimately goes to show that you're right:
Well, can you hang around a couple of minutes? He won't be long.
That's enough music for now, lads. Looks like there's dirty work afoot.
Well, this is the main hall. We're going to have all this knocked through, and made into one big living room.
Of course it's a good idea!

I am a leaf on the wind. Watch how I soar.

Aaaand now I'm sad.

The Dude Abides

Donny, please...
Hows the smut businesses Jackie?
I wouldn't know Dude I deal in publishing, entertainment, political advocacy.
Yeah, which ones Log Jammin?

OH HAI MARK.

This one time....at bandcamp....

"We're on a mission from God."

I hate Illinois Nazis

The name is Bond, James Bond

Royal with cheese

That's no moon.

Are you suggesting that coconuts migrate?

42

"Negative, I am a meat popsicle."

“Aziz, Light!”
- Still yell this when walking into a dark room.

I know both, but I still went with "Duke Nukem isn't a game" as my first thought

Alright you primitive screwheads, listen up: This, is my BOOMSTICK!

Good, bad... I'm the guy with the gun.
- I'll bend my bow to your will, sir!

Strange things are afoot at the Circle K

I am sorry Dave, I cannot do that.

Try not to suck any dicks on your way to the parking lot.

ITT: people think their favorite movie is more recognizable than it is

I'll make him an offer he can't refuse.

"I've got a bad feeling about this."

"You keep using that word. I do not think it means what you think it means."

"Get busy livin', or get busy dyin'.'"

"Now that's a real shame when folks be throwin' away a perfectly good white boy like that."

Go that way, real fast. If something gets in your way, turn.

I am serious. And don’t call me Shirley.

So you're saying there's a chance?

The greater good (the greater good)

Crusty jugglers

I’m not a witch, I'm your wife!

They should have sent a poet.

It’s mega-maid, sir! She’s gone from suck to blow!

"Klaatu barada nikto"
"Anál nathrach, orth’ bháis’s bethad, do chél dénmha"

The first one is a classic. The second one may not be as familiar but still is a great movie ;)

bitches, leave

I'll buy that for a dollar!

"Broke into the wrong goddamn rec-room, didn't ya??!!? Ya bastard!"

"Well where's the goddamn golden oldie comin' from?"

I am not the messias!

I’m in lesbians with you.

You must strive to find your own voice. Because the longer you wait to begin, the less likely you are to find it at all. Thoreau said, "Most men lead lives of quiet desperation." Don't be resigned to that. Break out! ::: spoiler Source Dead Poet's Society :::

As far back as I can remember, I always wanted to be a gangster.

KHA-LI MAAA

That kid is back on the escalator again... I hope his pants get caught and a bloodbath in sues!

You sucked thirty six dicks? In a row?

You must've thought it was whiteboy day!

If someone asks you if your a god Ray, you say yes!

My girlfriend's a dog... She barks, she claws, she drools, she sleeps above her covers. Four feet above her covers.

Lorain, I'm your density, I mean your destiny.

Oh Stewardess, I speak jive...

I must apologize for Wimp Lo, he's an idiot. We purposely trained him wrong, as a joke.

Frau Blücher.

Get the hell out of here! Now! You Kirk lovin Spock suckers!

"I'll be in my bunk."

https://youtu.be/xrFaTjcNzZM

FAIL. That's from a TV series, not a movie.
- Yup, you got me.
- What year is it

Somebody's Gonna Have To Go Back And Get A Shitload Of Dimes...

How about some more beans Mr. Taggrt? Waving hat I'd say you've had enough.
Also
Mungo just pawn in game of life.

It's good to be da king.

Japanese Man 1: RUN! IT'S GODZILLA!

Japanese Man 2: It looks like Godzilla, but due to international copyright laws - it's not.

Japanese Man 1: STILL! WE SHOULD RUN LIKE IT IS GODZILLA!

Japanese Man 2: Though it isn't.

Hail to the king baby.

Do you know what they put on french fries In Holland instead of Ketchup?

Welcome to the party, pal!

Zed’s dead, baby. Zed’s dead.

Pizza dude's got 30 seconds.

Radical!

I’ve seen things you people wouldn’t believe

I would like to have seen Montana.

As you wish.
If you can dodge a wrench, you can dodge a ball!
I rock... And rule!... All day long! Sweet Susie! / I'm bleeding, which makes me the victor!
I aim to misbehave.
Your mother was a hamster and your father smelt of elderberries!
Come with me if you want to live!
They mostly come at night...Mostly...
You! SHALL NOT! PASS!!
Whoever wrote this episode should die!
Rebellions are built on hope.

Lol I could keep going all night if I don't stop myself and I've work in the morning. XD

(Edit: Some new ones)

I can do this all day.
Puny god.
I am...inevitable.
Hold on to your butts.
I'm a dude, playin' a dude, disguised as another dude!

Lol I could keep going all night if I don’t stop myself and I’ve work in the morning. XD
C'mon man, "I can do this all day". It was right there.
- Thanks! Added. :D
  BTW. . .
  "On your left!"

What's your favorite scary movie?

You got magic legs!

You're gonna need a bigger boat...

"This episode was badly written!"

"It always stopped at one on the show."

You know what 'ol Jack Burton says at a time like this?

What's in the bag?

What's in the box?
- Say "what" again, mothafucka!"
- ?

Jawohl, Herr Kaleun!

"I am completely. Out. Of ammo."

slumps down.

"...that's never happened to me before."

My word is like my balls. I don't break em for nobody!

Greetings programs!

I prefer to think of them fighting evil in another dimension.

This means something.

Your ass looks like 150 pounds of chewed bubble gum!

There's no fighting in the war room!

Sire! The Great Leslie escaped with a friar!... He escaped with a chicken?!!!

Of course I denied installing CCTV in the nursery! What the hell would they watch?!!!

I think what we have here... Is a failure to communicate!

Did your parents have any children that lived?
Sir yes Sir!
Well I bet they regret that!!

‘Have we anything resembling a plan? ‘Uhuh, ride to we find them, kill them all.’

I'm your Huckleberry
- I was actually quoting 13th Warrior but my gods Tombstone is such a great movie!

"Can you hammer a six-inch spike through a board with your penis?"

You see, in this world there’s two kinds of people, my friend: those with loaded guns and those who dig. You dig.

Listen to your friend, Billy Zane. He’s a cool dude.

"Hello there"

"Weil wir so schön sind so schlank sind..."

"Zum Abschied sag ich leise scheiße"

"LISSY! FRANZ! LISSY! FRANZ! LISSY! OOH FRANZ!"

"Ils sont fous, ces Romains!"

"The senate will decide your faith"

"Machst du das nochmal mach ich aus deinen Ohren Wäschetrockner"

I say we take off and nuke the site from orbit. Its the only way to be sure.

Are you afraid of My Guatemalan-ness?

You're entering a world of pain

How about them apples

Mom, Dad, don’t touch it! It’s evil!

Who wants a mustache ride?

Pretty bird

Cool Beans

"I'm stuck in this pit, working for less than slave wages. Working on my day off, the goddamn steel shutters are closed, I deal with every backward ass fuck on the planet. I smell like shoe polish. My ex-girlfriend is catatonic after fucking a dead guy. And my present girlfriend has sucked 36 dicks."

"37."

COME. Out. Of. The. Spaceship.

Lips would be fine.

"It's a Sawzall. That means it saws ALL!"

Have you tried... not being a mutant?

He’d kill us if he got the chance

Nope
- The Conversation with Gene Hackman! Lol

It's okay, everybody relax. I'm here.

I am no messenger.

But I do bring you a message:

the message - of death!

Negative ghost rider the pattern is full.

Sometimes the wind blows trash in my face.

It's official.

"Dispatch war rocket 'Ajax' to bring back his body."

But for me, it was Tuesday.

"Police... men?"