Here's a question I've been pondering a lot: What are good questions to use to actually learn something about a person?

I usually go with "What kinds of things do you like to do in your free time?" although I don't know if I'm really the one to be making suggestions on this topic, considering how little I go out.

One reason I ask that is because I fit into the category of

people who spent a lot of time playing tabletop roleplaying games, reading fantasy novels, and making pop culture references to approved geeky television shows,

and I'm hoping to find people with similar interests.