The content seems to be good and interesting. It's a great thought and I'm sure this is a step in the right direction!
I'm not writing this to be mean, I'm writing it sincerely and hope it will be of use to you and/or others in the community.
Like tialaramex has written, it would be great to see something being displayed while listening to your content. In the current iteration - the video frames do nothing. Pseudo-code, logic charts - an image here and there would certainly spice things up one or two notches.
I'd like to point to Xiph's "A Digital Media Primer for Geeks" which has some of these elements - http://xiph.org/video/
On another note, I would love to read about the interesting things you're going through in these videos. They would surely do great in text form! Or atleast accompaning as subtitles for the video or a script by the side.