What Books are on Your Shelves?

Admittedly the stack of books I grabbed for the Books and Legos post was not my most recent wave of books. As I look over to the shelves I keep my more interesting books on, I can say that the stacks of books are predominantly SharePoint (2001, 2003 and 2007), .Net, ASP.Net, history, math and management.

Care to share? What is on your shelves or what do you suggest as required reading?