I'm officially hooked on the Teaching Company CDs. I just finished listening to Robert Greenberg's course on understanding Opera, and I can't wait to order the next ones. I've always loved classical music, but never really taken to opera. But Greenberg takes you right through the history, showing its development as an art form, and the various national schools of opera. The guy knows his stuff, and is hip-geeky in a Regis Philbin kind of way. It's a terrific survey course, and now that I know what I'm hearing, I'm planning to listen to some while I ride the bike in the morning.