To add another demo ... following is a street art project we did using the VLC plugin - using a touch-screen interface, people could click on locations and see videos (displayed full-screen on a second monitor) - it was an offline app., but used Firefox + VLC - documentation is here:
http://www.camputer.org/event.php?id=2 and all my source code can be found under Downloads/Resources .
It's really great what is possible with the Javascript API and working with it was a great experience. Thanks to all the developers and hope to see further developments / more stability. (if someone is interested, I can document all bugs faced, though I managed to figure work-arounds for most.) . thanks again.