Back to the Future Part II

"Don't talk to anyone, don't touch anything, don't do anything, don't interact with anyone, and try not to look at anything."

Marty McFly: "Tell me about my future. I know I make it big, but do I become, like, a rich rock star?"
Doc: "Please Marty. No one should know too much about their destiny."

Jennifer: "How 'bout a ride, mister?"
Marty McFly: "Jennifer! Oh, man, are you a sight for sore eyes; let me look at you."
Jennifer: "Marty, you're acting like you haven't seen me in a week."
Marty McFly: "I haven't."

"Oh, and Marty, be careful around that Griff character. He's got a few short circuits in his bionic implants."

"Biff Tannen, I wouldn't be your girl even if... even if you had a million dollars."
[Lorraine]

Marty McFly: "Nice shot Doc! You're not gonna believe this, we gotta go back to 1955."
Doc: "I don't believe it!"

"Marty! What in the name of Sir Isaac H. Newton happened here?"

Marty McFly: "The almanac. Son of a bitch stole my idea! He must have been listening when I- It's my fault! The whole thing is my fault. If I hadn't bought that damn book, none of this would have ever happened."
Doc: "Well, that's all in the past."
Marty McFly: "You mean the future."
Doc: "Whatever! It demonstrates precisely how time travel can be mis-used, and why the time machine must be destroyed, after we straighten all of this out."