If you haven't already heard about it, Lisp is a neat little family of languages; its extremely minimal syntax lets us think in nearly-pure algorithms, un-muddled by crufty syntax or obligatory boilerplate.
This guy is smoking crack.
While I agree that Clojure is probably the best shot we've got right now at a mainstream Lisp, there's definitely more than enough room for a new Lisp to emerge and steal away some eyeballs.
[Note: The quote above doesn't really have any connection to my point]
[Note2: says the guy writing another lisp in his spare time]