I have become a big fan of the web based screen casting tools, any OS as long as java is up to date.  None of these require you to have usernames to record, and download to the computer, but they will if you want to keep the videos in the cloud.

favorite is: http://screencastle.com/ ~ I challenge you to find easier.
others i like: http://www.screencast-o-matic.com/ 
and http://www.screentoaster.com/ ~ This will even capture the webcam image and show it in the screencast.

Bjorn Behrendt
IT Coordinator
Mount St. Joseph
[log in to unmask]
(802) 775-0151

On Fri, Dec 4, 2009 at 5:55 AM, Kathleen Nann <[log in to unmask]> wrote:
I use Community Clips. Couldn't be easier...records in .wmv so it can be
opened in Movie Maker and edited. It is free. Very easy for students to use.