Ask me something you think you should know about me. Something that could be obvious, but you have no idea about.
Then post this in your own lj and find out what people don't know about you.
For that matter, ask me anything at all. It doesn't have to go in the comments; both my email and my AIM screen name are in my profile. And ask as many questions as you like.
Of course, since I've yet to come up with any questions for others, I'm guessing I'm not likely to get many either.