The top five quotes of all time, in descending order:

"Frankly, my dear, I don't give a damn" (Gone With the Wind);

"I'm going to make him an offer he can't refuse" (The Godfather);

"You don't understand! I coulda had class. I coulda been a contender. I could've been somebody, instead of a bum, which is what I am" (On the Waterfront);

"Toto, I've got a feeling we're not in Kansas anymore" (The Wizard of Oz); and

"Here's looking at you, kid" (Casablanca).