Check out this link to a story of a church using U2 songs in place of hymns to atract new people:
While I love U2 and the church and have even done some U2 songs in the church this whole strategy is a bit precarious to me. It's as if they are trying to legitimize Jesus with Bono. I can see using a U2 song now and then in worship, or to iluustrate something in a church service but making a weekely service that does U2 songs exclusively is a bit creepy even to me. And what of the person that comes to church for the first time in years just because they are going to play a U2 CD at the begining of the service. It seems to me that a church is getting pretty desparate and insecure to serious adopt this type of strategy but hey that's just me.