My current leisure-time project is porting the examples from Peter Seibel's excellent Practical Common Lisp (PCL) to Clojure. I think Clojure is interesting for three reasons: Clojure is Lisp, but minus historical baggage. Clojure gives full access to the JVM and Java libraries. Clojure groks concurrency and state. My ground rules are simple: I am not going to port everything, just the code sample