I have noticed MS is making more of there content as video/poscasts-I do not think this is a good trend.
Even though this one was well organized, I would like to see these things transcribed to some sort of document.
Then it would be searchable. Also, I can read/skim something like this in about 30 secs and pick out the important parts and determining if it requires a closer read..
With these videos, we have to watch the whole thing  to find out if we enve need to spend time with it.