This list is from the Univerity of Pittsburgh's Library System OER Guide.
Inspiring thinkers on a range of subjects present big ideas and lectures on a regular basis- completely CC licensed.
Hundreds of short educational videos covering many subjects; especially strong collections in science and math.
PhET Science Simulations
These interactive tools from the University of Colorado at Boulder are mostly CC licensed.
The thinkers behind Wikipedia bring you images, video and music all openly licensed or in the public domain.
CLIP Information Literacy Tutorials
Find great tutorials on information and research competencies.
HippoCampus, a project of the Monterey Institute of Technology and Education (MITE), is full of high-quality resources in a variety of subjects. It is aimed at high school and college level users.
Songs by musicians who want to share their music.
A social network of video producers. This is a great place to look for a wide variety of content- some is completely open for redistribution, some is open access.
A community of people who seek to promote the use of media in teaching. The materials posted here are mostly presented using Fair Use guidelines.