Clara was one in a million. One in a billion. One in a googolplex!

Doc

[Marty places headphones over his father's ears and wakes him up by playing Van Halen music at full blast. George wakes up screaming - Marty pauses the music. George looks up to see Marty, who is unrecognizable because he is wearing a radiation suit]
George McFly: Who are you?
Marty McFly: [after giving him another earful of loud rock music] Silence Earthling! My name is Darth Vader. I am an extraterrestrial from the planet Vulcan!
[makes Live Long and Prosper sign with his hand]

[Biff is waxing George's car, it's a silver BMW]
George McFly: Uh... now Biff, I want make sure that we get two coats of wax this time. Not just one.
Biff Tannen: Just finishing up the second coat now.
George McFly: Now Biff, don't con me!
Biff Tannen: I-I'm-I'm sorry, Mr. McFly. I-I meant I was just starting on the second coat.
George McFly: Ahh... Biff. What a character. Always trying to get away with something. I've had to stay on top of Biff ever since High School. Although if it wasn't for him...
Lorraine Baines: We never would have fallen in love.
George McFly: That's right.

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

[Lorraine's parents are talking about Marty McFly, Lorraine's future son]
Stella Baines: He's a very strange young man.
Sam Baines: 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.

Strickland's Deputy: Buford Tannen, you're under arrest for robbing the Pine City Stage! You got anything to say?
Buford "Mad Dog" Tannen: I hate manure.

I guess you guys aren't ready for that, yet. But your kids are gonna love it.

Marty McFly

Jesus, George, it was a wonder I was even born.

Marty McFly

Marty McFly: Great Scott!
Doc: I know, this is heavy.

Marty McFly: You're Mad Dog Tannen!
Buford "Mad Dog" Tannen: Mad Dog? I hate that name. I hate it. You hear? 'Cause nobody calls me "Mad Dog", especially not some duded-up, egg-sucking gutter trash.

Dr. Emmett Brown: Then tell me, "Future Boy," who's President in the United States in 1985?
Marty McFly: Ronald Reagan.
Dr. Emmett Brown: [laughs] Ronald Reagan. The actor? Then who's VICE-President? Jerry Lewis!

Grandma Tannen: Biff, Biff, where you going, Biff?
Biff Tannen: I told you, grandma, I'm goin' to the dance.
Grandma Tannen: When are you coming home?
Biff Tannen: I'll get home, when I get home.
Grandma Tannen: Don't forget to turn off the garage lights!

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