Good interview with Zach - I didn't realize that he lived in Maine.

I have mostly switched my Lisp development from Common Lisp to Clojure because that is what a customer wanted and now I am hooked on Clojure, but when do I use Common Lisp Zach's Quicklisp package management and installation system is very nice to use - I wish he had written it many years ago. In case you haven't tried Quicklisp yet: http://www.quicklisp.org/