Self-Defense Sambo - Leg Sweep
Human Weapon video tutorial: Leg Sweep or leg trip refers to a technique in which the combatant performing the leg trip uses his or her own leg(s) to off-balance an opponent, hence causing the opponent to fall to the ground.

Self-Defense - Savate High Kick
Human Weapon: This video tutorial shows you how to do a Savate High Kick (fouetté).

Self-Defense Marine Martial Arts - The Reap
Human Weapon: This video tutorial shows you how to do The Reap. This move is similar to a Judo Trip, same mechanics, just a little more practical, and less of a chance for the opponent to sprawl out.