How to organize a retreat

"Never (never) have people go around a circle and say their name and what they do and their favorite kind of vegetable or whatever. The problem? People spend the whole time trying to think of what to say, not listening to those in front of them (I once had to witness 600 people do this!!)

Instead, a week ahead of time, give each person an assignment for a presentation at the event. It might be the answer to a question like, "what are you working on," or "what's bothering you," or "what can you teach us." Each person gets 300 seconds, that's it."

http://sethgodin.typepad.com/seths_blog/2010/12/how-to-organize-a-retreat.html