Method to bridge to unbelievers

Have you led a GIG, Alpha Course, a 40 Days of Purpose group or some other method to bridge to unbelievers? If so, discuss their effectiveness. If not, discuss their potential effectiveness in your church context. Share about any other bridging strategies you have heard about that might be effective in your church context for reaching those in the post-Christian culture. Use your reply postings to broaden your understanding of church evangelism tools.