April 15, 2013
Not per se. Much more on the systems programming and GUI sides of Common Lisp.
I'm an old-time Lisper (Symbolics employee #27, then Lisp consulting in Israel through '92 or so). Later, I spent years on the dark side: C, C++, Java, mobile since 2000 and even management. I've been using Clojure for the past few months.