I was helping out in my son's kindergarten class. The teacher had turned on the radio to some Star somethingorother station. At the end of the night I said, "remind me to bring my iPod next time and we can have some good music." She said she didn't really like the station either and asked me what I liked. I said, "I like pretty much everything using real instruments with real singing. Bonus points if they wrote it themselves."
She took this attitude and said, "oh, like Coldplay?" It was so obvious that she had this one group in her head that was on the top 20 stations, but also had that alternative pedigree. The "so there attitude" was so heavy that I just shut down. I just can't handle people who judge music by the number of sales.