AFI #063 Dustin Hoffman as Benjamin Braddock from The Graduate (1967)

Benjamin: For God's sake, Mrs. Robinson, here we are, you've got me into your house. You give me a drink. You put on music, now you start opening up your personal life to me and tell me your husband won't be home for hours.
Mrs. Robinson: So?
Benjamin: Mrs. Robinson, you're trying to seduce me... Aren't you?
Mrs. Robinson: Well, no. I hadn't thought of it. I feel very flattered.
Benjamin: Mrs. Robinson. Will you forgive me for what I just said?

- Dustin Hoffman as Benjamin Braddock from The Graduate (1967)

The bolded line is ranked #63 in the American Film Institute's list of the top 100 movie quotations in American cinema.