The old animation directed by Issiac Asimov!
Thought I would never see this, but I found a torrent last week. It took about 1-2 days to get it as there aren't any seeders and the tracker its on goes down alot. So take this with a grain of salt. I would highly recommened if you are going to go after this to use a BT client that supports DHT or some time of distributed network. Azerues, uTorrent, and Mainline do I am sure others do as well. I will also upload the torrent to the FTP incase the tracker won't respond ( it times out alot ).
http://tracker.zaerc.com/torrents-details.php?id=6428