I've always found higher numbers of gay people in the arts- musicians, actors, artists, etc. I tend to think of gay people as (generally) more creative and open-minded thinkers. Now don't get me wrong, there are plenty of straight people who are brilliant artists and the like, but the numbers of gays in the creative fields seems to be higher than in the general population. Here's a theory, perhaps being in a situation where one's lifestyle is under such scrutiny causes one to be more introspective in dealing with other things that come up in life. Also, when I meet gay people, I know they were more likely to have been in theatre in either high school or college (if not both) and are probably more into it. Usually a fun thing to strike up a conversation about.
Me, although str8, I was in theatre in high school and college, as well as choir, swing choir, chamber choir, solo and ensemble. Took ballet for nine years, oh what a gay man I'd have made!