Sovereign Grace Ministries has been been planting churches for nearly 30 years. They currently have 95 local churches throughout 21 countries. SGM has initiated a cooperative effort to advocate church planting discussions among their own organization, the PCA, ACTS 29, IX Marks, and the Southern Baptist Convention. The Conference they recently held in the Philadelphia area is called PLANT. Among the speakers present were Mark Dever, C.J. Mahaney, Darrin Patrick and Dave Harvey. If you are engaged in church planting or interested in planting a church, I encourage you to listen to the talks. You can find them here, here, here, here, here, here, here, and here.
I especially recommend that anyone actively engaged in church planting listen to the two talks given by Darrin Patrick: