A short story by Jean Giono, adapted into a beautiful animated short by Frédéric Back.
http://us.imdb.com/title/tt0093488/
http://www.cdra.org.za/creativity/The%20Man%20Who%20Planted%20Trees%20-%20Jean%20Giono.htm
This is a good film to inspire you to plant UnitTests in a sprawling wasteland of LegacyCode.
-- IanOsgood