Rather than favorite books, I have favorite authors. Here are a few I can think of at the moment: Barbara Kingsolver, David Sedaris, Larry McMurtry, John Irving, Marcus Zusak, Ayn Rand, Pat Conroy (Kathy, I know you're heaving right now.) From reading more than just one or two of an author's works, not necessarily from a series, I think you can triangulate his or her personality fairly accurately. Of course, since I don't run in those elite circles, I haven't tested this theory, but I'm sticking to it.
What a way to meet new people, right? Just find "F Zus" in the Young Adult section of a library and you're in: "Reader, I'd like you to meet Marcus Zusak. Mr. Zusak, this is one of your readers. She'd like to know a little more about you." Sometimes, real life introductions can be awkward, but what's simpler than reading a book? When I want to connect, but I'm not feeling socially adept (maybe my filter's on the blink again, it happens), I open a book.