http://www.huffingtonpost.com/2009/03/30/the-history-of-april-fool_n_180097.html?alacarte=1
I have a pasgetti tree in my back yard.
My fav was a BBC mocumentory about sheep who grazed on hillsides for so many generations that they were now all born w w legs shorter than the other to accomodate to the slope of the hill. All done in that classic BBC "plummy" tone.
Videos