Apple's iTunes has revolutionized the music industry, but the iTunes website has also quietly built quite a selection of podcasts made by faculty for their courses. Most of these are free, so go poke around and see what's there. It's easy to make your own podcasts as well, so you could post them on your website (or somewhere at LVC). One great use is to time-shift your lectures so you can use valuable class time for more interactive activities.
