Great idea. I think I can make it but won't be able to support the program much. Would you reckon English as the primary language or German?

Also, it's a good idea to have someone like Nils (kojote - www.silberkind.de/+) on board because he has extensive knowledge about the organization of such events. He is active in the PHPUG, organizer of the Barcamp Muc, GTUG Muc, ... probably the best known geek from Munich.