A very thought-provoking book by one of the original designers of the Macintosh computer. A human-centric computing model which challenged many of my assumptions. Information Appliances and Beyond Edited By Eric Bergman A neat collection of case studies and justifications for various products, from a usability standpoint. Great reading if you're an interface geek, even if you don't find yourself agreeing with all of the conclusions. Most web designers don't think of themselves as user interface designers.
Most web designers are dead wrong.
It can be a little dry, though. Morville A nice solid introduction to thinking about the web in terms of information organization. This is the textbook for the Web Management class I teach. This is the one thrust into my hands in undergrad journalism courses, so it's the most familiar to me. I've been told that I'm a damn good technical editor.