ryanishungry and Freevlog - about what's going on with Blogger Beta, key new features, the background to its development, etc.
This screencast features Eric Case of Team Blogger (who also blogs himself), who deals with developer relations at Google for the Google open source team and Google Web APIs. A lot of the features discussed we Blogger users know about already, like tags or rather labels, the new drag & drop template layouts etc, but it's still interesting.
(Via Google Code Blog, which also points out that developers who want to use the Blogger Data API might want to check out the bloggerDev Google Group. I missed the Blogger Buzz mention, somehow!)