Posted by Platinum

http://www.hyperionics.com
HyperCam is a commercial windows-only screencasting program, but has a free trial version available. Records system audio.
http://www.allcapture.com/eng/index.php
The same as hypercam, except has the option of adding audio during or after the recording.
http://www.screencast-o-matic.com
A java-based, freeware program that works with Java and Windows, but has bugs with its Linux version.

I would attempt to do more detailed descriptions of the software, but that should be enough information you need.