I found this video on YouTube through Facebook.  I do not know much about the charity, but I will be using the video as a stand alone at our large group gathering. If you are planning on doing more than watching them on YouTube there are several apps that will help you do just that. Check out the mac users forum for links (at the bottom of the article) or Chris’ article on downloading YouTube videos for more info. Hope this bubbles something useful up to the top for you.