I recently ran across a feature-length animated movie entitled "Sita Sings the Blues". One of the most surprising things about it is that it's released for free under the Creative Commons share-alike license. You can download it here:
If you want to support it financially, you can also donate or buy the DVD.
It's a pretty fun treatment of the story of Sita, from the Indian epic "Ramayana".
What's most interesting to me about all of this is that originally Nina Paley, the artist behind the movie, wanted to release it through more traditional channels. But due to her experiences with licensing issues (involving music from the 1920's that she used heavily in the film), she became a Free Culture advocate.