This video is several years old, but it's really, really good.
A few years ago, reports coming in from the field to the International Mission Board of the Southern Baptists were showing something new. An rapid and seemingly almost spontaneous multiplication of new disciples and new churches was occurring in several unrelated parts of the world. As they examined these movements, which they called church planting movements, they found several features common to each.
This video documents some of what they are seeing. For a longer, 12 minute version of the video exploring the principles involved, check out their site and find the video, Like and Mighty Wave in their search engine.