What's on your bookshelf?

There were a couple advertising campaigns the title of this post might hearken back to, one for a frozen pizza company and the other for a ravening horde of ruffians promoting a certain credit card, does anyone else remember those?  It is probably a pretty sad commentary on our time that a catchy advertising jingle is more culturally relevant to most people than the best works of literature.  That being said, what's on your bookshelf?  If a stranger came over to your house and perused your library, what would it say about you?  What does your choice in books say about your interests and personality?  Hopefully it is a far better portrait of you than my memory of advertisements is of me!