Techcrunch has an interesting video online: Web 2.0: The 24 Minute Documentary. (Ok, its almost 2 months old, but nevertheless very interesting.)
The topics discussed include:
1. What is Web 2.0?
2. Are we in a bubble?
3. What are the business models that will work on the web today?
4. What is the role of publishers in a user generated world?
5. How important and how big is the early adopter crowd?