What's the most unusual experience that has happened while you were in a worship setting?

-  - I remember as a recent Bible College graduate, I was serving as an associate minister with a church plant on the West Coast.  During the sermon on a particular Sunday morning, a visitor took issue with the message and interrupted the service.  My friend and colleague, Phil Dalton, handled the situation from the pulpit in a masterful way.  I don't think I could have handled a surprise like this with such grace, composure and authority as he did.  I'll have to say, I can't remember any other situations during which someone has verbally protested or attempted to debate in the middle of a sermon.

What memory do you have of something highly unusual taking place?