When I am in Scandinavia, I often work with Softhouse, a consultancy with clients like Sony/Ericson and IKEA. They have an excellent short paper called:
On my laptop, I can run this PDF in full screen mode as a slide show and use it for press briefings or short overviews for those not familiar with Scrum, particularly when working on "Scrum for Everybody" for non-IT implementations.
I used it in a large press conference last week in Buenos Aires and the press feedback was very positive. They said it hit them at just the right level and that my responses to questions (working through a real time Spanish interpreter) were unusually direct and to the point every time. I told them that was a lesson in Scrum transparency. We want everything to be open, clear, and direct so that teams and companies can self-organize to improve performance.
Softhouse also has a nice graphic showing the Scrum process.