Often, I read about someone's inspiring success story.  Since I generally lose track of them, I thought I should keep a list:

 * Alex Pukinskis successes with [[http://groups.yahoo.com/group/extremeprogramming/message/117540|relating XP to manufacturing Theory of Constraints]]
 * Bob Jarvis' experience with [[http://groups.yahoo.com/group/extremeprogramming/message/114961|CMMi assessment of an XP team]] at a bank.