"Elephants Dream", highly interesting computer animated short-movie.
"Elephants Dream is the world’s first open movie, made entirely with open source graphics software"
... Apparently they pour money and work into these kind of projects for free and for the good of the Open Source movement. How about that?
And you can download it for free too!
If you have a big screen and a good Net connection, you should "invest" in the high rez version, the pictures are amazing. Seriously, this stuff makes the many-doors scenes in Monsters Inc look like yesterday's news. I had not expected this from a non-profit project.