[youtube=http://www.youtube.com/watch?v=gv02lBUnLVQ&w=700] Quite simply, excellent. Love his footwork too, and the odd little giggle punctuate some of his more punishing end-moves. Little digs and pinches everywhere. Hatsumi is awesome. His analogy of marriage and affairs vs fighting in the ring and against multiple attackers is also ace.

Watch, for example, 35.00 to 37.00. Really simple way to break grips. Beautifully explained. Hilariously ouchy move on the opponents at the end!

[youtube=http://youtu.be/XBmJay_qdNc&w=700] Are you more honest than a banker? Under what circumstances would you lie, or cheat, and what effect does your deception have on society at large? Dan Ariely, one of the world's leading voices on human motivation and behaviour is the latest big thinker to get the RSA Animate treatment.

Taken from a lecture given at the RSA in July 2012 . Watch the longer talk here.