I would LOVE to learn Krav Maga. That looks pretty efficent with no flare. I have been trained in Tae Kwon Do, Army Combatives (basics), and (even though I wouldn't refer to this as a "discipline") I have done some backyard wrestling...I know that prob doesn't count but I feel it deserves to be mentioned. Also, having studied medicine (I used to be an EMT), I know how to cause some damage.