I definitely agree with your last comment about Graham. I'm finding that, as I learn more about Lisp (a language that has hardly changed in the past 20 years), I notice that many of the features that I love about languages such as Python and Ruby have always been there in Lisp. I am definitely seeing a convergence of most modern languages on Lisp and I believe this trend will continue with future versions of the languages I love as well as with the next generation of programming languages.
By the way, thanks for pointing out the book, I looked it up on the web and it looks pretty interesting--perhaps some reading for me after I finish the SICP classes. If anyone else is interested in the Higer-Order Perl book, the link below will take you to its website: