"Have you checked out the amazing number of high-quality videos and other resources available in iTunesU? I learned recently (thanks to Peggy George) that archived, video versions of Classroom 2.0 LIVE sessions are now available in iTunesU. After you click the K-12 category in iTunesU, choose "Arizona's IDEAL eLearning Platform, then Professional Development, and lastly Classroom 2.0 LIVE."