Heh, thanks for the post which I found entertaining, especially this part: "Videos allow the viewer to sit in a comfy chair and listen to a soft-voiced, nice-sounding instructor (am I the only one that thinks the voice of Salman Khan is incredibly soothing?), which inevitably puts the viewer to sleep." :)<p>More to the topic I personally feel that more important than the choice of video or interactive exercise as the teaching medium is the individual's motivation to learn. Without that it's easy to fall asleep, metaphorically speaking, and with it, things like pausing, rewinding etc. isn't a problem at all. The training material simply has to open a few conceptual doors, and the rest naturally follows.