Cool collection of informative videos on social networks, blogs, wikis and social bookmarking from the Pew Trust's e-patients blog (via Matthew Holt). For the uninitiated, these clips explain all these tools in a clear, concise and entertaining way. Now I bet I can even get my parents to understand this stuff! (As well as some colleagues... :-) )
But to really bring this all to life, you have to see the lively video by Adriana (who I work with) showing the impact these tools can have when put into action.