I was playing a Tull album in the car once when giving a lift to my daughter (14 at the time) and 3 of her mates, their band was playing in a Battle of the Bands, her mates had never heard Tull. Within a week they had all gone out and bought the CD and raved over it.
I think it just proves that kids nowadays just listen to what the likes of Simon Cowell and the big record companies tell them to listen to. When I think back to when I was a teenager we went out looking for the "underground music" as everyone wanted to be the first to find a new band. Now they just sit on their arses and wait for it to be spoon fed yo them.
My three kids like a wide variety of music from all eras and are always raiding my cd's and albums for stuff