When I was in college we had a swing dance society on campus that met twice a week and it was about 70% CS majors. As an adult in a different city I've met probably half a dozen coworkers or peers in software who are or have been into one kind of dance or another; my engineering manager at my last company was prominent in the blues dancing scene and when I told him which company I was going to, he told me my new CTO is like a master ballroom-dancer. Even Jonathan Blow has said that he enjoys swing dancing.