I've been a fan of Terry Pratchett's Discworld books for about 15 years. This year, the Discworld fan event being held from the 3rd to the 5th of August in Wincanton is a 'Scout Jamboree', complete with Discworld troops, a Gang Show and a wide range of 'interest badge' events. While not an official Scouting event by any means, it seems a lot of effort has gone into researching the appropriate activities, and I am particularly looking forward to seeing the results of the Semaphore tower competition- patrols will be competing to build towers that can signal in semaphore when operated from the ground. Booking forms and other info are available here. For those, like me, who are unable to attend there will also be a Jamboree over the Clacks at the Cunning Artificer forums.
A brief example of the sort of effort that has gone into researching background: here is the badge for the fictitious Scout Association sponsoring the event. The motto 'In Omnia Paratus' is a rough translation of 'Be Prepared'(or 'Ready for anything') into Latin.