You can view our team's Chairman's video here:
http://www.youtube.com/watch?v=ZKx44...5viEJ80Nd0d6SU
I think the key for the video (and your submission as a whole) is to find what works for your team. You'll see stuff in our video (such as the Australian Flag) that probably won't work for your team. We also try to incorporate as much of our team as possible. For example, because we have a bunch of students who love animating, we try to include that in the video as seen with the graphics on the bottom of the screen.