Interesting how the Clojure talk came as the culmination of the day's talks. Sounds like the Common Lisp people might be giving Clojure a serious look.
Definitely interesting. So far, I've used Lisp more as a teaching tool (e.g. SICP, Little Schemer) than a production language. Not that it isn't production worthy, but I hear such mixed things about every dialect that I've yet to commit to one. So as an outsider, Clojure sounds compelling.
Yeh, balkanization of LISP is one thing that keeps me from engaging. I'm more willing to try out haskell (http://learnyouahaskell.com) or F# for that reason.
lisp was introduced to me as follows: Lots of Irritating Superfluous Paraentheses
also: most game boy games were written in lisp. true story.
I think you might be confused about the GameBoy, but lisp has been used for game development...