While in San Francisco recently for a meeting, a group of ThoughtWorkers got together to record some podcasts. The first has now been posted here:

In this two-part series, Martin Fowler, Chris Stevenson, Jim Webber, and Sriram Narayan discuss REST (Representational State Transfer). They touch on the history of REST, a detailed explanation, and examples. Additionally, they discuss programming with the Web today, modeling your resources, types, RESTful enterprise development, and reuse.

http://www.thoughtworks.com/what-we-say/podcasts.html