This Playboy interview with comics writer Grant Morrison has been making the rounds:
Gayness is built into Batman. I’m not using gay in the pejorative sense, but Batman is very, very gay. There’s just no denying it. Obviously as a fictional character he’s intended to be heterosexual, but the basis of the whole concept is utterly gay. I think that’s why people like it.
Morrison has written some of the best Batman comics since the 1980s, so he ought to know. But who knows better than Slog? Nobody, that's who: