Recurring Events

I am on a continuing road to allow users to efficiently create repeating events. The use case is a site dedicated to unplugged gamers in the community (think board games, RPGs, card games, etc.) at tuga.unpluggedgaming.org I've recently invited some of the main people in the community to start using it. I have to think the issue I'm posting below has come up for anyone creating any kind of calendaring event system, so hopefully there are some answers out there and/or this might help others as well.