We go to church to feel something. Growing churches who've done solid exegesis of the culture have implemented services designed to generate feelings. Churches built around older models of faith and fact are not at the growing edge of today's Christian movement. This is why they come to church expecting enthusiasm, excitement, exhilaration, and stimulation. It's the leader's job description.
Speakers have to sweat.
We must exude energy, laugh, cry, leap about, produce a sensation . The audience gets caught up in it all. And they do. Now they feel different. It's not totally unlike attending Scream 3.