Kopi Luwak coffee comes from the droppings of this little cute critter. It's an Asian Palm Civet!
The coffee berries which pass through his digestive system lose their bitterness on their way out. The gourmet civet also selects only ripe coffee berries to munch on.
A regular cup of Joe is made from ripe and unripe coffee beans. Coffee harvested from civet poop will run you 50 bucks a cup in a fancy pants restaurant. Cheers!