Screenflow: http://www.telestream.net/screen-flow/overview.htm
It has won a number of Apple design awards and I've found it to be excellent all around.
It has won a number of Apple design awards and I've found it to be excellent all around.
In that case, the program you're looking for is Jing: http://www.jingproject.com/
However, if you're distributing your screencast to the web (or even more than just one or two techies), Screenflow is worth every penny.