Here are a few versions of it. The embedded one is 20 minutes I created on my computer with Camtasia as I gave it a practice run. Here is the actual presentation (40 min) recorded by Ecampus. Here is the Prezi if you would like to access any of the links in the video.
And, there's always more for those with an interest. Here's a link to my presentation last year, Connect Using Screencasting and Web 2.0 Tools.