I've enjoyed the following books on various subjects within the field of Information Technology.

Frederick P. Brooks, Jr., The Mythical Man-Month, Addison Wesley Longman, Inc., Boston, MA, 1995

Steve McConnell, After the God Rush, Microsoft Press, Redmond, WA, 1999

Louis Rosenfeld, Peter Morville, Information Architecture, O'Reilly & Associates, Sebastopol, CA, 1998

Edward Youdon, Death March, Prentice Hall Inc., Upper Saddle River, NJ, 1999

Steve Krug, Don't Make Me Think, Que Division of Macmillan, Indianapolis, IN, 2000

Jakob Nielsen, Usability Engineering, Academic Press/Morgan Kaufmann, San Diego, CA, 1993