Second warning: I'm massively liberal. I bring this up because... etc. :-D
I'm also a somewhat quiet and geeky person. Left to my own devices, I tend to sit around reading, playing videogames, and puttering on the internet. This is not to say that I'm averse to social activities, but I am an introvert, I don't need much social interaction, and I do need my recharging time.
I'm married to tomatofruit, and have been for the last 12 years. We have a kid. I've now scared off most of the remainder of you.
I am nerdy, technical, and modular.
I may, possibly, be a humongous nerd.
I'm a good reader. I read books fast enough to worry my wife, who has always felt herself to be a proficient reader. Hah, I showed her.
I like to think that I'm good at considering my own biases, and working out why I think what I think. It's tough.
I'm a decent cook. Given raw ingredients, I can create a tasty meal. Don't knock this. Unfortunately, my wife hates washing dishes more than I do, so she gets to do all the cooking and I get to do all the dishes. Woe is me. At this point I'm somewhat out of practice, honestly.
I'm great at being a snob about things that aren't necessarily important to everyone. I will judge you based on: how you use your turn signals; spelling, punctuation, and grammar; awareness of the intricacies of the American political system.
Other than that... I tend to be sort of scruffy. I like how I look with some stubble, and so I shave less regularly than would be required to be neat.
Books: Anything by Terry Pratchett, most things by Lois McMaster Bujold (particularly the Vorkosigan and Chalion books), most things by Neil Gaiman. George R. R. Martin is wonderful, but needs to write faster. Steven Brust writes some good stuff. Jim Butcher is one of the very few people who can write an ongoing series with a proper plot arc. Brandon Sanderson does some good things, though I've not actually checked out his finishing of the Wheel of Time yet. There's a notable preference for sci-fi/fantasy here; I've never really been one for "serious" literature.
Movies: Star Wars (I grew up on the original trilogy, and it has a special place in my heart), The Princess Bride, Unbreakable. I've recently seen and liked: Sucker Punch, Scott Pilgrim, Sherlock Holmes, Star Trek, and (breaking the "S" theme) Inception. Pacific Rim was really fun, if you go into it with the right expectations.
TV: Firefly, How I Met Your Mother, Dr. Horrible's Sing Along Blog (I don't want to make a "web miniseries" category, okay.) I used to watch a lot of anime, but I sort of slipped away.
Music: I love over the top power/symphonic metal -- Dragonforce, Blind Guardian, Nightwish, Hammerfall, those sorts of bands. I like music fairly generally, and I can't list many genres that I don't listen to sometimes. That said, the majority of my listening time is spent somewhere under the broad branches of the "rock" genre. I'm also a fan of folk, particularly the folk-rock branch; I've been listening to The Decemberists a lot lately.
Food: I like it. Honestly, I'll eat almost anything. I have a shameful weakness for fast food, though, especially since having a small child makes restaurants with a play area incredibly appealing.
I don't think I could cope with a sexless relationship. It'd make me miserable. I felt horribly shallow when I acknowledged this to myself a while ago, because "love trumps all!" is really drummed into you. But hey, sexual compatibility is important, too. And being honest about what you want.
Gmail. I love those labels. Just love 'em.
Cold nights. So many things are more fun when warmth is actively enjoyable. I developed such an air conditioning bill in Southern California.
Open and honest communication. Seriously, with my relationship choices, it's pretty essential.
Music playing software. Getting away from a rigid album model, having to switch cds or make mix tapes to get variety... this is good.
Sometimes the answer to this is "playing World of Warcraft". Or writing addons for it, at any rate.
If you get me drunk the main difference you'll notice is that I get more talkative and more enamored with my own vocabulary. Those who have observed me very, very drunk assure me that I don't get particularly silly or blatantly impaired. However, I rarely drink enough to generate this comment.
You're okay with a definition of "short term dating" which is basically "hanging out with someone in various ways on a pseudo-regular basis, while having fantastic sex".
You're fine with the open relationship and the child.
You understand that just because I work from home doesn't mean I'm always available. I still have to put in a full work week... I just get a bit more flexibility than most people.