Andrew,
Look to (successful) companies like Pixologic who care how they are perceived by their user base. ZBrush tutorials are a fantastic resource, well organized and presented in both streaming and downloadable formats for users trying to follow step-by-step, click-by-click examples.
Thats funny :lol: It looks like you really know what you are talking about. Ouh, by the way, just to let you know - Pixologic team
always uploaded their videos to youtube (among other services), even more, during ZB 3 beta period most of the videos firstly apear on youtube, before any other places. Go to youtube, type "zbrush" and start to count videos (also check who is uploader of some videos). If its to hard, call me - i'll come and help you to count'em all

You can also check it for "Mudbox" videos.
When 3DC team will make line of quality tutorials i'll vote for making them in a good quality and .mov/.avi/.wmv format, like ZClassroom, but for "fast'n'Dirty" media nothing is better than flash.