Ever get anyone hooked?

Tonight, my roomate was like, hey can I play the bass? She plays guitar and keyboard, but had never picked up a bass. So I let her, I taught her a thing or two, now she's hooked, she was so happy when she was playing it made me laugh. I also taught another girl, my friend's girlfriend, how to play "Chick Magnet" by MXPX because she loves that song. But now my roomate has decided that she doesn't see the guitar as satisfying as the bass, it's not as fun. I've got her hooked, I just think that's funny. Any similar stories?