I'm married, my spouse is smart and and hot, and our first date was spent talking about Civ III vs Civ IV and different strategies we've tried. In the early days of the relationship we'd have Sci-fi Friday date nights. We've been together more than five years at this point, our biggest issues are things like rolling our eyes when we catch each other watching guilty pleasures Batman Beyond or Smallville... which is then changed to mutually acceptable shows like Firefly or Battlestar.
Did you ever think maybe, just maybe, there are so many divorced and unhappy couples because all of the pretense and hiding of who you are and what your interests are bites you in the ass? Do you think maybe you'd be happier with someone who is actually intrigued, understanding, or maybe even shares some of your interests that make you different from the other random people s/he could be on a date with?
I understand that there are some things you don't bring out on the first date because there's no establishment of trust yet and there's so little information to go on that little pieces of data might disproportionally color their impression of you. But come on, there are so many movies and adult-targeted tv shows based off of comic books, video gaming has gone so mainstream that you'd think one of the world's biggest problems was the advent of casual gaming, sci-fi and fantasy in general has become something relatively common place in prime time entertainment. Grow a pair and be yourself and find someone who will actually like that about you!
An authority is a person who can tell you more about something than you really care to know.