The big buzz in the Jewish community has been community organizing ala Saul Alinsky. It's a great model to organize, but to organize for what? Oftentimes congregations don't have a sense of purpose around their organizing.
Take some time to learn about a corollary strategy, developed 30 years ago by John L. McKnight, called Asset-Based Community Development, http://www.abcdinstitute.org/. Take a look at this video for a story about how ABCD works, http://vimeo.com/12402395.