My friends tell me I can be very witty, I generally find that's only the case when I don't try too hard (at least that when they laugh the most). I have a somewhat dry/sarcastic sense of humour which sometimes teeters on the edge of the surreal.
I like to think of myself as a realist (but I know some people would consider me a pessimist), but even when things go wrong I can often find a sort of ironic, grim amusement from it.
I'm a bit of an introvert, I find large social group to be exhausting, and I tend blend into the background, but I do like to spend time with good friends and have long rambling conversations that when you reach a natural pause, you sometimes wonder how the heck you ended up talking that. I know tons of useless information, unfortunately because it's useless, it's not particularly useful in pub quizzes (darn it all)
I also like the work of Brandon Sanderson, Douglas Adams and Terry Prattchet.
Movies: I like movies which make you think, I'm a big sucker for movies which start in media res, but a high octane action movies can also be good providing it doesn't try to take themselves seriously and/or rely on the "star power" of the main actor(s).
Shows: I'll give anything by Joss Whedon a try (loved Firefly), and if it's Sci-Fi or Fantasy, I'll almost always give it a try.
Music: Hard to say, I don't generally listen to much but if I hear it I like a bit rock/metal music (not thrash metal though), or classical. I really can't be doing with Rap music though...
Food: Not really into spicy foods, I'm a complete spice wimp, if it's hotter than black pepper, I probably won't like it.
I have absolutely terrible eyesight, so I'd be pretty scuppered without my glasses.
As for everything else...well as Chuck Palahniuk writes in Fight Club “The things you own end up owning you."
I could live without pretty much everything if I had to, but I would miss my computer.