This announcement from Creative Commons (http://creativecommons.org/) website:
Creative Commons and the Fedora Project have teamed up for the Open Video Contest taking place now through August 20, 2006. To participate, submit a video that explores freedom and openness. Entries should be 30 seconds or less, in Ogg Theora format, and be released under the Creative Commons Attribution-ShareAlike 2.5 license. The winner will receive Fedora-branded Sony Camcorder and the first 150 submissions will receive a pair of handsome Fedora flip flops.
Nice to see they are specifying the use of Ogg Theora