Screencasts and videos are an effective way of presenting demonstrations quickly. For example, here is a three minute screencast that serves as a promotional video for my Cocoa Programming book. You can improve distance learning and in-person training and presentations by incorporating video and screencasts

Mix still images with audio and you get something bigger than the sum of the parts. As an example, here’s a recreation of the talk I gave at the tenth Jini Community Meeting in Brussels with the original slide deck.