Unexpected Quotes

I remember the first time I saw Casablanca. I was so surprised at all of the famous quotes that were in the movie. It was like "Ohh that's where it came from". I was just watching On the Waterfront and honestly I was bored. I was looking at any trees or shrubs and wondering "Are those cypress trees?" Then all of a sudden Brando said "I coulda been a contender". Suddenly, I was interested in the movie. I would have thought that it would have come from a total boxing movie like Rocky. What unexpected quotes have you come across lately?