OK, I've been recording 10 minute samples of my AP Computer Science class as quicktimes (*.mp4) using http://screencast-o-matic.com for youtube. Its great for students who are absent or want to review an old topic. My kids love that we have our own TV station!
goto http://www.youtube.com and search for "u CAN learn AP" or "u CAN learn AP Computer"
Teaching with Technology,