"The Future of Sex"
Niftily, Jed Hartman has a cool essay about sexual minorities in science fiction:
Whenever I read such a work, it makes me wonder why the fictional society of the far future is less sexually diverse than early-21st-century America. Where are the gay, lesbian, bisexual, transsexual, intersexed, polyamorous, or kinky people?
Yah. What he said.