The Association of Research Libraries has a very helpful free brochure for Faculty and TAs called Know Your Copy Rights—What You Can Do. Libraries can print and brand the brochure for distribution and use on their own campus.
I also recently discovered the Scholarly Communications @ Duke blog. A recent post uses the example of Death Cab for Cutie being sued for posting a youtube video of their own performance on their website to warn scholars that they may not have the right to post their own published works on their personal websites.
Stanford hosts a Copyright & Fair Use site, with links to all kinds of helpful stuff. Of particular interest is this interview with Kenneth Crews, who prepared the World Intellectual Property Organization’s Study on Copyright Limitations and Exceptions for Libraries and Archives for its Seventeenth Session in Geneva, November 3 to 7, 2008.