Drawing videos, or video scribing, or drawing animations, among many other names, have become quite popular in many venues since 2010 when RSA Animate first invented it back in 2010. It involves watching a hand drawing images that reinforce and add to the message on many levels. Their technique is highly sophisticated, with an extensive pre-production phase that involves creating an engaging storyboard in two colors following a talk by an eminent speaker, then filming the drawing process in real time on whiteboard, and of course a post-production phase to ensure perfect timing between drawing and voice.
While there's not much serious research out there yet on drawing videos, one psychologist, Richard Wiseman tested recall comparing a video of himself talking and another using a drawing video approach with the same voice, and found 15% greater recall among his subjects (admittedly a limited sampling...). My own pet theory is that mirror neurons may be responsible for a greater level of involvement in the images -- I'm wondering if watching a hand drawing words and images in addition to the voice similar to taking visual notes, doodling, or otherwise engaging hand, eye and mind in an attempt to better understand and assimilate information?
Certainly many companies and organizations are becoming convinced these little videos are well worth the effort. Recently the HELP programme at the Council of Europe asked me to do a short explanatory video of their offering to legal professionals. We didn't film me drawing, however; I used another technique, a kind of "screen capture" on the iPad, which can be exported and then edited with voice and music for a similar effect, even without the hand... In this instance, few words were used as the film will subtitled in 9 languages.
Click on the video to enlarge and see the whole screen.