Acknowledgments Creating a book such as this could not have been done without the support of many people. UCD is iterative by nature; we wouldn't expect that writing a book about UCD would be any different. We would like to thank our chapter authors for agreeing to take part in this venture, and for taking the time, care, and attention to endure several rounds of edits and reviews. Their desire to share their stories, and to do so with high quality and good humor, helped make this task much less daunting and much more fun. We are indeed fortunate to be associated with such a talented group of professionals. A special thanks goes to Carolyn Snyder, Deborah Mayhew, and also, Catherine Courage and Susan Weinshank, for lending their time and considerable talent to help