just read a great article by tim keller on evangelistic worship. this is and issue that is consistently a dance for the church, and particularly for us as worship leaders. what is the role of worship in evangelism.
i have long held the conviction that worship is necessary for evangelism. it fuels it. a church that does not worship will fail at the evangelistic mission. now that can look lots of ways, and it requires us to really evaluate what we are doing corporately and privately (remember Paul's comments in 1 Corinthians)...but that said worship fuels mission.
check out the article, i though keller had some really great thoughts that will challenge you no matter what camp you fall in on this issue.