Alan Kay, inventor of Smalltalk, apparently gave some interesting talks at the University of Utah recently. Bill Clementson has a post about the talks and some of the comments Alan has made about Lisp in the past.
Most people who graduate with CS degrees don't understand the significance of Lisp. Lisp is the most important idea in computer science. Alan's breakthrough in object oriented programming, wasn't objects, it was the realizing that the Lisp metasystem was what we needed."