One of my favorite scenes, probably the first time I heard about sushi:
John Bender: [pointing to Claire's lunch] What's that?
Claire Standish: Sushi.
John Bender: Sushi?
Claire Standish: Rice, raw fish, and seaweed.
John Bender: You won't accept a guy's tongue in your mouth, and you're going to eat that?
Claire Standish: Can I eat?
John Bender: I don't know. Give it a try.
I especially love Bender's last line, it might be in the delivery, but I always cracked up at it. Sometimes I quote in random conversations but I don't think any really gets that I'm quoting Bender.