Hannity is on three stations in my area. When I hear his show for a minute or two here and there, every caller seems to have met Hannity somewhere and have kept up some kind of correspondence, and he has pet names for half of them, and they were at a meet-and-greet and he talked to them and remembers them, and they sent him gifts and letters and he's meant the world to them and they like being "Hannitized."
A while back, I just kind of figured all of Hannity's callers were taped, plants, or otherwise "not live and off-the-cuff."