Multimedia Creation Software

[Derek Neighbors]

For GNU Enterprise I have been working on some tutorial guides and such.  
Generally it is much harder to write documentation showing how to do 
things than to show someone, especially in a highly visual environment.

What I would love to do is have a program record all the actions on my 
screen and record my voice at the same time.  This way I could give a 
presentation, much the way we do at PLUG and at the end I would have an 
electronic 'video' that I could post on the net as a 'tutorial guide'

I would love to do this for classes for PLUG as well.  Anyone know of any 
Free Software that does something like this?

-Derek