I actually first saw this animation when it was only 15 minutes old on YouTube (only about 3 days ago). At that time, it only had a few hundred viewings and comments.

Now it's gotten nearly 2 million views. It creates a mixture of happy and sad emotions.

Here's the link:

http://www.youtube.com/watch?v=sdUUx5FdySs

The author was recently interviewed. You can see it here:

http://www.isfat.com/happyjunk/kiwi.php