http://youtube.com/watch?v=ZJWT3p7uM6Y

Its little things like this that I really appreciate about YouTube... being able to see stuff that I probably would not have otherwise. This animation is really well done, and has a message without speaking a word. Won best animated short (http://www.imdb.com/title/tt0096880/awards) in 1990.

Here (http://youtube.com/watch?v=A4Yf-7Z_6PE) is another animation with a lesson. Warning: the WTF factor is even higher on this one.