Know Your Rights As An Author - a brief explanation of a typical author addendum when signing contracts from the Scholarly Publishing and Academic Resources Coalition (SPARC).
Creative Commons - you can license your work and specify how it may be used. CC is non-profit and free.
Code of Best Practices in Fair Use for Online Video is an important step forward in the fair use debate. It describes six common practices of videographers and filmakers and gives the copyright principle and reasonable limitations of each practice.