Speaking of self defence, workmate of mine turned up at an incident last night where a nutso with a knife was threatening him.
He found a novel way of using pepper-spray (after thinking about after-care, use of O.C. spray report etc).
He THREW it at the face of the knife wielder, when 'nutso' lifted hands to protect face my mate leapt in and wrenched the knife out of their hand.
BTW He IS pretty 'up-there' when it comes to unarmed combat etc - I wouldn't tangle with him - unless I was the one with the gun! (joking, he's a top guy)