Thanks Google!

I just ran a search for that coffee and Google came to my taste bud's aid! Apparently it's called Kopi Luwak and not Kopi Luvak (as Rediff.com spells it) and it derives it's name from Luwak (Paradoxurus hermaphroditus), a feline denizen of the coffee (kopi) plantations of Java, Sumatra, and Sulawesi.

"It eats only the ripest coffee cherries. Unable to digest the coffee beans the Luwak graciously deposits them on the jungle floor where they are eagerly collected by the locals. The stomach acids and enzymatic action involved in this unique fermentation process produces the beans for the world’s rarest coffee beverage," says the website. Sounds stimulating?