Steven John Metsker, passed away in 2008 and was a Managing Consultant with Dominion Digital, an information technology and business process reengineering company. Steve specialized in object-oriented techniques for creating clean, powerful software, and he is the author of Building Parsers with Java™, Design Patterns Java™ Workbook, and Design Patterns in C# (all from Addison-Wesley).
William C. Wake, http://www.xp123.com , is an independent software consultant, coach, and trainer with more than twenty years of programming experience. Bill previously held positions with Capital One Financial, DMR Trecom, and VTLS, Inc. He is the author of the Refactoring Workbook and Extreme Programming Explored (both from Addison-Wesley).