What s/w to record video commentary?

I often see videos of people either teaching chess or commentating on games.  To pick a completely random example:

http://www.youtube.com/watch?v=YHDlA3nCyl0&feature=channel

What software are they using to make this video?  I specifically mean what are they using to capture the desktop moves.  It looks Fritz-ish to me.

I don't mean the software to assemble the video (like with Adobe Premiere) or convert it to YouTube.  I know how to do that.  If you want to play through a chess game on your computer and capture the screen to put in a video, what software is used?

Thanks!

In this video jrobi is using a form of chessbase to show the video. I do not know what he uses to record them though. I know that majnu2006 uses Windows Media Encoder, GeniusProphecy uses Camstudio, myself, teddster214 and chessopnings use screencastomatic.com