A few famous ones:
"Frankly, my dear, I don't give a damn.” Gone With the Wind
"Toto, I've got a feeling we're not in Kansas anymore.” and "There's no place like home" and I'll get you, my pretty, and your little dog, too!” The Wizard of Oz
"Here's looking at you, kid.” Casablanca
"May the Force be with you.” Star Wars
"I'm as mad as hell, and I'm not going to take this anymore!” Network
"Bond. James Bond.” Dr. No
"Show me the money!” and “You had me at ‘hello.’” Jerry Maguire
"You're gonna need a bigger boat.” Jaws
"I'll be back.” The Terminator
"If you build it, he will come.” Field of Dreams
"Plastics.” and "Mrs. Robinson, you're trying to seduce me. Aren't you?” The Graduate
"It's alive! It's alive!” Frankenstein
"Here's Johnny!” The Shining
"Yo, Adrian!” Rocky
“Tell 'em to go out there with all they got and win just one for the Gipper.” Knute Rockne All American
" I feel the need - the need for speed!” Top Gun
How about a not so famous one, but a great scene from the movie Shooter (Levon Helm):
Old Man: That's how a conspiracy works. Them boys on the Grassy Knoll they were dead within three hours, buried in the damned desert, unmarked graves out past Terlingua.
Detective: You know this for a fact?
Old Man: Still got the shovel...