Peter Norvig's "Paradigms of Artificial Intelligence Programming: Case Studies in Common Lisp" (a.k.a. PAIP) is one of my all-time favorite programming books. I think it's amazing and well worth going through even if you're not interested in Lisp or AI, just for the depth and breadth of solid advice and excellent code it contains.

This project is my attempt to go through PAIP again, this time meticulously reimplementing all programs in Clojure, a modern flavor of Lisp running on the JVM or in the browser.