ISHOWU

IShowU from shinywhitebox.com is a $20 tool that helps you make screencasts on a mac.
With ISHOWU you can record very high resolution screencasts and export them for upload to bioscreencast.com.

Watch this introductory screencast which shows you how easy it is to get started with screencasting using ISHOWU.

Sample Settings

Making A Screencast 

1. Making a screencast is as simple as selecting a recording area by dragging out the mouse
2. Starting , stopping or Pause of a screencast can be performed using either the ISHOWU Gui or the small icon on the top tool bar

def this is a test:
print Hello World