37signals (makers of Basecamp), filmed a customer
story for one of their products: Highrise (a
CRM).
They then did a blog post on how they did the video. It's a
great explanation of how to do a demo. For me, it is interesting
from a video perspective, but I think it can work for other demos
as well. Particularly useful: that they didn't just tell the story,
but they included the video as well - to see the points in
action.
http://www.37signals.com/svn/posts/1554-how-to-film-customer-case-study-videos