This was the first public talk given by Rich Hickey to introduce Clojure. It was hosted at LispNYC on Nov 13, 2007. It's remarkable how close this is to Clojure as it is still used today.
MANY thanks to LispNYC and Heow Goodman for unearthing this original audio (we're not aware of any existing video for this talk).
http://lispnyc.org/History#section-History-20071113LispNYCPresentation