Author of Adaptive Software Development, another people-centric ultralight methodology. Also Agile Software Development Ecosystems.
Jim has written about XP in the Cutter Consortium newsletter an/or the eAD journal. A copy is available online at www.cutter.com 
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c2.com
Will be at Leadership Summit - Summer 2006
How to be an Agile Leader
APLN news
See also: Highsmith And Cockburn
See original on c2.com