We seem to be getting a lot of requests into the department for screen videos showcasing features and intrsuctional videos on how to help guide users. I know many people use these videos for their products, and it is something worth integrating into a product development. I just thought I would highlight this topic as we have had about three request in this week.
We personally use captivate for this as it is very user friendly and can easily add comments etc
Also the motion capture part allows for easy recording of second life. The only downside to these things is when you are entering text on the screen as it takes ages.