iTunesU has even more resources than previously imagined. If only we had more time to explore them! Here are a few from today that I highly recommend:
TechEase - Classroom Tech Help
from the University of South Florida
Beyond Campus - KQED - Quest
Also- I learned that you can "tear-off" the last breadcrumbs tab to save as a shortcut to get back inside of iTunesU quickly and easily.