Creative Commons gives authors and creators control to choose which rights are important to them and which they do not wish to reserve; you can say "some rights reserved" instead of "all rights reserved" and give the public more permissions to your work than is typical under copyright.
From the same group of lawyers, professors, and advocates that brought us Creative Commons, the Science Commons gives scholars a variety of addenda to add to a publication agreement in order to help authors retain more of their rights.
From the Center for Media & Social Impact at American University come several "Codes of Best Practices in Fair Use," developed by professionals in the following areas:
Not sure what constitutes "fair use?" Use the Fair Use Checklist, developed by Dr. Kenneth D. Crews at the Columbia University Copyright Advisory Office.