Most people who create Blender (a 3D graphics app) video tutorials use an addon that includes the keys they are typing on the screen. It is very useful, and would be interesting especially for emacs or Vim users who use a lot of bindings.
I can't stand video howtos. You can't skim a video, or search the text of a video. They seem especially irrelevant in the world of text editors. I'd rather read the keystrokes on a doc/webpage. You could even open it right in the editor.
