I spent a little time tonight watching some of the Ruby Conf 2008 videos. I especially liked Dave Thomas' keynote on forking Ruby. The parallel Ruby suggestions were very intriguing and looked very practical. Also, Nathaniel Talbot's Fear of Programming was great.
You can find them all at Ruby Conf 2008 at Confreaks
There are a number of others I'm going to try to catch this week. Looks like I missed some great topics!