One of my all-time favourite resources to use for my social media classes is this video by Erik Qualman, author of Socialnomics, a book first published in 2009 which examined the way that social media transforms the way we live and do business.
There are several versions of the video, but I usually use the 2011 version as I like the music the best!
You might also like to see the latest version:
And the original (short) version:
Zestee 
Interesting post and videos! I try and devour all that I can to stay current in social media which I how I found your blog. Thanks for the info!
Thanks Matt, had a quick look at your site too and looks good. It’s tough to stay current in social media isn’t it! Though that’s also what makes it an exciting industry to work in, right? All the best, Renee