@discopunk I agree with what you're saying.  In November, I gave a lesson at school on how we talk about the music that we like and dislike.  The goal was to get students to say more than I like it or it sucks but to also include why.  After talking about the new vocabulary, I told students that they now needed to pretend that they were music producers and that they were going to listen to a variety of different song clips and that they had to decided whether or not the liked the song enough to put on a CD that they were producing and why. I had a huge range of different songs but without fail the two kinds of songs that everyone loved and wanted to put on their CDs were Metal and pop songs (top 20).  I expected this going in (given the metal t-shirts I see and the cell phone ring tones that I hear) but I also expected that the classes would be split on the songs that they likely had never heard before.  In about three of the classes this was true.  Students would say I've never heard this song before but I like it (I'm not gonna to teach your boyfriend how to dance with you By The Black Kids) but in the other classes for the most part if they'd never heard it they hated it.  I was kind of bummed out by these reactions because my music taste runs counter to this and I'll listen to anything once but I still have high hopes for these kids!!