Let's go with broad strokes:
I love making people laugh, and I'm instantly fascinated with anyone who can make me laugh. Conversation is maybe the most important thing to me. If you're someone who can talk intelligently and enthusiastically about anything or everything, you've got my attention. I love smart, interesting people -- clever and witty are even better.
Since "laid back" gets a bad rap around here, I'll say this: I'm unflappable. Cannot. Be. Flapped. I'm eternally curious about the world around me and love learning new things (useful, practical, or Trivial Pursuit-random), and I'm comfortable with low-brow and high-brow. I have tastes, but I'm not pretentious.
I'm an extroverted introvert. I definitely prefer smaller groups and have no problem staying in with good company.
I have curator tendencies: years of growing up tackling and getting bored with every artistic outlet has left me with a passion for admiring and sharing books, music, art, and whatever else with whoever else. (You'll have to be okay with me saying "You've gotta see this! It's amazing!" because I'll do it all the time.)
I'm drawn to old things - the more character, the better. My place is full of bizarre antiques and I may be turning into some kind of collector or grandma. I think I want to be a Bond villain, or the bad guy from "Indiana Jones and the Last Crusade"... but more poorly dressed and less evil (in that order).