Very good article, though I doubt it'll convince the usual mass of unbelievers. (I love Lisp, for the record, though my primary exposure has been through Emacs Lisp - so shoot me).

A really great book that helps you get appreciate the concepts in Lisp, without really talking about Lisp directly too much, is "Patterns of Software" by Peter Gabriel. http://amzn.to/TxDKGG

I found it to be a very enlightening read. Definitely a book you have to sink into with plenty of time and quiet.