RSS in Plain English

We are starting to get a buzz at my workplace around Web 2.0 due to a whitepaper my team just wrote on how professionals (read: our customers) use Web 2.0 in their work. The paper is due to be launched in January and in the meantime I have been asked to create a short presentation on what Web 2.0 is. My first thought was to use a Common Craft video but sadly they don't have one just for Web 2.0 yet! Oh well, looks like I do my own presentation after all. I do love their RSS in plain english video but don't think I'll have time to show the whole thing - I may adapt some of their visualisation techniques (the arrows!) to my presentation.