YouTube now offers people who upload video the option of licensing their videos under a Creative Commons Attribution License, which gives others the right to use and to remix the work as long as they give the credit to the creator of the original work.  (Users who choose to do so may still use the standard YouTube license if they prefer.)  Additionally, YouTube has created a library of works already available under creative commons licenses, from sources including C-SPAN, Voice of America and Al Jazeera.

Official Announcements:

News and Blogs: