"In the early 19th century the Dutch established coffee plantations in Java and Sumatra, but prohibited the native farmers from collecting the prized beans for their own use. But the farmers soon realised that the Luwaks consumed the coffee berries and left the coffee beans undigested in their droppings. They then collected, cleaned, roasted and ground the coffee beans so that they too could enjoy this precious beverage."

http://www.theloveofcoffee.co.uk/kopi-luwak-civet-cat-coffee-543-p.asp

News to me. Or maybe you lot drink that all the time?