Robert Kay blogs about an inspiring talk given by Damian Conway in which he brought together Conway's (no relation) Game of Life, Maxwell's Demon along side the Klingon and Perl languages! He references Paul Rendell's Life Turing Machine which was new to me and is simply amazing. There are some cracking demos of various components on the details page, one of my favourites being the Finite State Machine from which the above snapshot was taken.