I have started passing the Elephant Room DVD's around to a few folk in my church. This is great way to encourage them to think through their doctrine.
On the inside cover of the DVD is this quote from James MacDonald:
"The purpose of the church of Jesus Christ is not to reach people, or feed the poor or any other of those important 'by-products.' The purpose of the church is to elevate and honour God's great Son in the minds and hearts of those who gather in His name. Period."