One of the things that initially attracts most people to the study of chemistry is the visual aspect of chemical change. The WWW is an access portal to some interesting work in this field. The quality of what is available for free varies widely.
Some projects are very mundane and others are cutting edge.
This section of the site is an attempt to organize what I've found and put it in one place. My personal take on video demos is that I don't like them as original sources. I don't think chemistry teaching should be done solely with video. However, as references for something that was missed in class or presentations of something that is not possible to do in class videos can be useful. In collecting these links I've had to answer that question for at least myself.