I recently found this series of excellent documentary films on the web. It is about the history of germany from its beginnings around 900 AD. Especially the first four or five episodes are great as they show a lot of fluff for WFRP and give you an idea how a mediveal/renaissance society worked and looked like. As it is a very new production it only exists in the german original. But I think that it is even worth to watch it even if you cannot understand a word