Slate Magazine has an interesting read on Buckhead Church, LifeChurch.tv and a few others.
Most Sunday mornings at Buckhead Church in downtown Atlanta, one person is conspicuously absent: the senior pastor, Andy Stanley. A nationally known evangelist, Stanley is usually 20 minutes away at North Point Community Church, the suburban megachurch he has led for 13 years. To the 6,000 or so faithful at Buckhead, he appears only on video, his digital image projected in front of the congregation in life-sized 3-D. The preacher is a hologram.