Below is a video from my presentation at Refresh Detroit last month. The audience consisted of web designers, librarians, Wordpress and Joomla fans, and more. I explained a little about why Drupal is open source, what that means to people and businesses, and how you can both benefit from and contribute to Drupal.
Full presentation and recap available at Refresh Detroit.
[Note: video is old and doesn't work anymore. Sorry.]
A big thanks to Phill Tran for creation, editing, and posting the videos and presentations!