Martin Lippert works as a consultant and coach for it-agile GmbH (located in Germany) and is an expert on agile software development, refactoring techniques and Eclipse technology. His special interests include aspect-oriented programming, refactoring, incremental design and the Eclipse platform. Martin is a frequent speaker at technical conferences and has published a number of papers and articles. He is co-author of the book "Extreme Programming in Action". You can contact him at lippert@acm.org or http://www.martinlippert.com