I was amazed by the quality of the form and the message brought by some of the libertarian videos on YouTube - I will definitely use them as a tool to explain my point to people!
For example, I came to both http://www.philosophyofliberty.blogspot.com/ and http://www.georgeoughttohelp.com/ via their videos on YouTube.
Could it be a good idea to start collecting links like that in a single thread for ease of reference?
http://www.vforvoluntary.com/videos