Clojure fans seem quite taken to hyperbole. If the language is such a "joy", "ultra-productive" etc I would have expected after such a long period of existence some major open source project to be showing off what the language attributes allow you to do.

Happy to stand corrected if there is such a slam-dunk showcase that I've missed, I am actually interested to dig into clojure, if nothing else as a way to deepen my understanding of functional programming.