Can anyone think of any other pop culture terms/phrases that fall into the same category? Ones that can be traced directly back to a single utterance?

Well, sort of tangentially related...

What has to be the most memorably effective television commercial of all time... I can just about guarantee that after you read the magical first five words, you will be able to sing every word of the commercial, and close your eyes and see the commercial play in your mind. (Probably North American only -- I doubt that other areas of the world were exposed to it.) When you consider that it has not been aired commercially in over 20 years, the staying power of this ad is extraordinary. OK, are we ready?

"My bologna has a first name..."

tanstaafl.