I just posted the latest episode of Devcasting:
http://devcasting.com/index.php/2007/12/17/devcasting-8-ruby-on-rails-with-bruce-tate/
In this episode, Derek Hatchard and Mike Mullen speak with Ruby on Rails author and developer Bruce Tate about the Ruby programming language, the Ruby on Rails web framework, some of the differences between static and dynamic typing, Rails scalability, how to get started with Ruby on Rails, and a bit about the work Bruce is doing with ChangingThePresent.org.