There is a great animated short film that you can download for free here:
http://www.bigbuckbunny.org/ (Click download)
Here you can watch the youtube version: http://es.youtube.com/watch?v=YE7VzlLtp-4
http://www.bigbuckbunny.org/ (Click download)
Here you can watch the youtube version: http://es.youtube.com/watch?v=YE7VzlLtp-4