Some special learning features on head styling and body sway (do's and don'ts)would be very useful too.
A beginners DVD would be great.
What's so good about the short video clips is that it's possible to learn them in a couple hours and then fine tune them in practice sessions, retaining the bits we like most. I copy each clip onto a zip drive for my lap-top and take it to a practice session with a print out of the steps. I can then play the routine one frame at a time if necessary.
I've bought many video-cassettes over the years. these contain so much material it's almost too daunting - and i have to take along a rack of equipment to do what i can do with just my lap-top. AND, they rarely print out the steps.