I'm actually on the hunt for this coffee in Melbourne, being it's such a coffee-oriented city: Where can I buy a cup of 'cat poo' coffee (Kopi Luwak) in Melbourne?, but while discussing it in the travel.SE chat room, we were wondering what it is that makes it worth drinking?
From Wiki and other sources there's some talk about cherries with some beans cause certain enzymes to be produced, but they seem to insist that this wouldn't happen with the same ingredients in another beast? So is it the beans + food, or the animal itself, and what is the resultant flavour - more bitter / sweet than regular coffee, or what?