Self-Defense - Krav Maga - Bursting
Human Weapon: This video tutorial shows you how to do the Bursting technique from Krav Maga. Your upper body, or torso, quickly is "released" from the lower part and bursts into the attacker's knife arm and upper body. The burst into the arm deadens the knife arm causing severe shock and often causing the assailant to drop the knife. The strike to the body can be directed against the neck, face, throat, or chest. The two strikes land simultaneously.

Self-Defense - MMA - Armbar
Human Weapon:

Self-Defense - Muay Thai - Flying Knee
Human Weapon: This video tutorial shows you how to do a Muay Thai Technique. A flying knee (known as hanuman thayarn in Muay Thai, and sometimes called a jumping knee) is a knee strike very similar to a front knee, except that it is performed in stand-up fighting by jumping, and often by rushing towards the opponent.