If you're a major Star Wars nerd or you're obsessed with fantasy worlds like Lord of the Rings, don't worry about hiding it! Being open about your nerdy hobbies is kind of cute, and owning it is better than trying to keep it a secret. As long as you're not crazy obsessed, women don't have a problem with men who embrace these kinds of hobbies.
Video games usually go hand-in-hand with all of the mainstream geeky passions, and they're totally fine, too. But a word of caution: don't play them 24/7 and never blow off a date or other set plans with your woman in order to play them. This is a major turn off for most women. After all, can you blame us for not wanting to come in second place to a computer?