I remember some article about the band Elastica. They were on top of the charts, on the covers of magazines, they were "it." In contrast to the popstar image, they stayed in the hotel room, played Scrabble, went to bed early.
I worked in record stores for a couple of years a long time ago, and we'd have musicians come in to make appearances or shop for music or whatever.
One of the more interesting visits was Winger, a mid-range hair metal band of the era. They were extremely polite, very well informed about the business of their tour when I talked with them, and they bought a good number of 50s era jazz cds to listen to in their bus.
I heard a bit from Alice Cooper on NPR recently, about how he was the inspiration for younger musicians to shock audiences with fake blood and satan worship, but then he'd meet those guys back stage, they were all like, "mr cooper, I'm so honored to meet you. this is my mom. she baked you some cookies."