The power of Wikipedia, illustrated & narrated by Jon Udell
Jon Udell has created a screencast -- narrated screen-capture animation -- which engagingly demonstrates the evolution of a Wikipedia article, revealing a lot about the power of Wikipedia collaboration (and incidentally, the power of screencasting for both demos and didactery).
While I usually find the timing of videos and multimedia presentations excruciatingly sluggish, Jon moves through his points at a brisk pace that had me wanting to back up and take a closer look at a few points. Enter via Jon's weblog entry: (You'll want Shockwave installed and your volume up.)
This screencast could help a lot of people "get" Wikipedia in ways that a unguided visit or plain written/spoken explanation might not provide.