Self-Defense - Pankration - Achilles Leg Lock
Human weapon: This video tutorial shows you how to do an Achilles Leg Lock, from Pankration. An achilles lock (also called an achilles hold or achilles squeeze) is a compression lock that involves pressing the achilles tendon into the back of the ankle or lower leg.

Self-Defense - Silat - Sinking Python
Human Weapon: this video tutorial demonstrates the Sinking Python trick.

Self-Defense - Judo - Tomoe Nage
Human Weapon: This video tutorial shows you how to do a Tomoe Nage. Tomoe nage (巴投) is one of the traditional forty throws of Judo as developed by Jigaro Kano.