Redeemer City to City’s church planting reading list was just released a few weeks ago. If you’re already convinced that church planting is “the most effective means of reaching people with the gospel” (especially in an urban context), then check out the titles. This is the best list I’ve seen thus far in terms of scope, breadth, and depth.
An interesting omission: there is not one Acts 29 inclusion (i.e. nothing by Mark Driscoll, et al).