This week I experimented with a program I used briefly a couple years ago.  Screenflow has really grown up.  It is a powerful screen recording and editing tool for the Mac.  If you’ve ever heard of Camtasia for the windoze platform, Screenflow is very similar.  I am looking for reasons to use Screenflow in my classes and hope to be posting a new video soon.  If you have a Mac and want to experiment, you can download a trial version of Screenflow.  It’s quite cool