(Also viewable on Vimeo.)
The legendary Dr John Pucher (pronounced Pooker), Professor of Planning and Public Policy, Rutgers University, gave this hour-long lecture at Simon Fraser University in Vancouver, Canada (see the rest of the seminar video at the SFU site).
Entitled "Cycling for Everyone: Lessons for Vancouver from the Netherlands, Denmark, and Germany", the seminar was held in SFU on May 15, 2008.
He talks about how important it is to make cycling accessible to everyone, not just for the hardcore cyclist, and addresses the issues impacting the cyclists, the pedestrians, and the motorists when designing a citywide cycling programme. He also debunks many of the myths surrounding the implementation of such programmes.
It's an hour long but very enlightening, insightful, and useful stuff.
Also a good read, his paper on "Why Canadians Cycle More than Americans: A Comparative Analysis of Bicycling Trends and Policies" (link to PDF).