George: Last night, Darth Vadar came down from Planet Valcan and told me that if I didn't take Lorraine out that he'd melt my brain.

Stella: He's a very strange young man.
Sam: He's an idiot. Comes from upbringing. His parents are probably idiots too. Lorraine if you ever have a kid that acts that way I'll disown you.

Biff: So why don't you make like a tree and get outta here.

George: Lorraine, my density has brought me to you.
Lorraine: What?
Geroge: Oh, what I meant to say was...
Lorraine: Wait a minute, don't I know you from somewhere?
George: Yes! Yes! I'm George, George McFly! I'm you density. I mean...your destiny.

Marty: Wait a minute, Doc. Ah...are you telling me you built a time machine...out of a DeLorean?
Doc: The way I see it, if you're gonna build a time machine into a car, why not do it in style?

Doc: What on Earth is this thing I'm wearing?
Marty: Ah, this is a radiation suit.
Doc: Radiation suit? Of course, because of all the fallout from the atomic wars!

Marty: Yeah well history is going to change.

Lorraine: When I was your age I never chased a boy or called a boy or sat in a parked car with a boy.
Linda: Then how am I ever supposed to ever meet anybody?
Lorraine: Well, it'll just happen, like the way I met your father.
Linda: That was so stupid! Grandpa hit him with the car!
Lorraine: It was meant to be.

DOC: First, you turn the time circuits on. This readout tells you where you're going, this one tells you where you are, this one tells you where you were. You input your destination time on this keypad. Say, you wanna you see the signing of The Decleration of Independence...or witness the birth of Christ.

Marty: Does it run like on, on regular unleaded gasoline?
Doc: Unfortunately, no. It requires something with a little more kick . . . plutonium!

Doc: Roads? Where we're going we don't need roads.

Doc: Then tell me, "future boy", who is president in the United States in 1985?
Marty: Ronald Reagan.
Doc: Ronald Reagan? The actor?! Who's Vice President? Jerry Lewis?
Marty: What? Wait Doc!
Doc: I suppose Jane Wyman is the first lady! And Jack Benny is secretary of the treasury! I've had enough practical jokes for one evening! Good day, future boy!

Lou: You gonna order something, kid?
Marty: Ah, yeah... Give me a Tab.
Lou: Tab? I can't give you a tab unless you order something!
Marty: Alright, give me a Pepsi Free.
Lou: You want a Pepsi, PAL, you're gonna pay for it!

Doc: Don't worry! As long as you hit that wire with the connecting hook at precisely eighty-eight miles per hour the instant the lightning strikes the tower ... everything will be fine!

George: Lou! Give me a milk... Chocolate!

Marty: Wow, they really cleaned this place up. It looks brand new!

Goldie Wilson: I'll be the most powerful man in Hill Valley, and I'm gonna clean up this town.
Lou: (handing him a broom) Good, you can start by sweeping the floor.

Marty: If you put your mind to it, you can accomplish anything.

Marty: Jesus, George, it's a wonder I was ever born!

Doc: Next Saturday night, we're sending you back to the future!

Doc: I'm sure in 1985, plutonium is available at every corner drugstore, but in 1955 it's a little hard to come by!

George: I know what you're gonna say, son. And you're right, you're right. But Biff just happens to be my supervisor, and I'm afraid I'm just no good at... confrontations.
Marty: The car, Dad! I mean he wrecked it! He totaled it! I needed that car tomorrow night, Dad. Do you have any idea how important this is to me? Do you have any clue?
George: I know, son. And all I can say is... I'm sorry.

Marty: Hey, I've seen this one. I've seen this one. This is a classic.
Milton Baines: What do you mean, you've seen this? It's brand new.
Marty: I saw it on a... rerun.
Milton Baines: What's a rerun?

Stella Baines: Why do you look so familiar to me? Do I know your mother?
Marty: Yeah, I think maybe you do.

Biff: I have your car towed all the way to your house and all you've got for me is LIGHT beer?