Kent Beck is a Cutter Expert; he has been a contributor to Amplify, including guest editor for a two-part series on Extreme Programming (XP) and culture change; and a keynoter, panelist, and workshop leader at the Cutter Summit. Mr. Beck is the founder of XP and author of numerous books, including Extreme Programming Explained: Embrace Change, Smalltalk Best Practice Patterns, and with coauthor Martin Fowler, Planning Extreme Programming. Mr. Beck has pioneered CRC cards, the HotDraw drawing editor framework, the xUnit family of testing frameworks, patterns for software development, and the rediscovery of test-first programming. He can be reached at experts@cutter.com.