These are wonderful, free webinars. Generally, they are every Saturday at noon, and they include teachers who are using various technology tools. The moderators are great, and Elluminate is my favorite platform for webinars. The links are all collected (now in livebinder), and the archive is even available in iTunes as an mp4 or mp3 (some people listen weekly on their iPods).
List of episodes from School Librarians United. It makes a nice list of duties and experiences a teacher librarian might have (in addition to being able to listen to the episodes!)