I got a McOpinion this evening from the McDonalds drive-through attendant. He saw my Texas plates and while making the change decided to tell me how Bush is just a power-monger.
My barber is known for making use of her captive audience, too. Her themes are racism and rich folks. A friend's barber literally raps (softly) to his customers about oppression and racism.
This reminds me of my captive audience -- bathtime is a great time for catechizing the little ones!