http://en.wikipedia.org/wiki/Kopi_Luwak
Kopi Luwak (pronounced [ˈkopi ˈluwak]) or Civet coffee is coffee made from coffee berries which have been eaten by and passed through the digestive tract of the Asian Palm Civet (Paradoxurus hermaphroditus)...
Kopi Luwak is the most expensive coffee in the world.
One small cafe, the Heritage Tea Rooms, in the hills outside Townsville in Queensland, Australia has Kopi Luwak coffee on the menu at US$46.00 per cup, and approximately 4 people a week are up for it.
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I've never tried this one... would you?
I brought back some "Cubita Dark Roast" from Cuba last month and I really like this one, especially when I make it in a Bodum.
Nicaragua and Hawaii also produce some very good beans.