100 Days of the Little Lisper (thelittlelisper.blogspot.com)

I remember reading that great book 'The Little LISPer' by Daniel Friedman. I really enjoyed it.

With the rise of lambda expressions in C# and soon in Java7, and other developments like the Clojure language - it seems that these ideas are back on the radar, even in the Enterprise space.

This guy is working through the 3rd Edition of book in solving the problems in Common LISP. He's even got twitter updates going on @thelittlelisper. It's be great to watch him finish it off.