This talk summarizes the results of 4 years of industry surveys concerning the adoption and effectiveness of agile techniques. Very often the reality is significantly different than the rhetoric presented in mailing lists, in articles, and even in books. How effective are agile approaches compared to traditional approaches? To iterative approaches? Are people modeling? Writing documentation? Doing TDD? How much co-location is actually going on? How many organizations are really doing agile? To what extent? Come and find out answers to these questions and more.