LISPers are a definitely a rather eccentric developers' community.
Actually it's not just a video, there's a book too:
Land of Lisp, Learn to Program in Lisp, One Game at a Time! by Conrad Barski, M.D.
Cite this blog post:
New Perspectives on Medieval Scotland: 1093-1286, Woodbridge, Suffolk: Boydell and Brewer, Studies in Celtic History Series, Aug 2013.