This video by Michael Wesch is going around (thanks Brad and Seth): The most thought-provoking aspect is the notion that the web is forcing us to rethink everything ("authorship ... ethics ... privacy ... ourselves"). Deep stuff. At the same time, Professor Wesch gives a surprisingly clear and accurate history of web publishing and highlights a lot of today's most relevant sites (delicous, wikipedia, blogger, youtube, flickr, and, of course, the Wayback Machine) and technologies (CSS, RSS, XML). It's not easy to take a complex topic like Web 2.0 and summarize it in a unique, articulate, and entertaining way in under 5 minutes.
Helpful & Relevant

JSON Feed Is Cool (+ a Simple Tool to Create Your Own)
David Eisinger, VP of Development
2007 Resolution: Make The Web Better (Your Part of it, Anyway)
Brian Williams, Co-Founder & CEO
“Social Media” Versus Web 2.0
Ken Yarmosh
Styling HTML5 Elements: An Irresponsible Choice...Right Now
Trevor Davis, Front-End Development Technical Director
