i long ago used up all the real anger in my system, and am now considered very calm most of the time. i occasionally lose my temper badly, but i havnt for about 2 years now.
i did originally have one of the worst tempers imaginnable, triggered whenever someone tried to steal some of my stuff, or touch me. i would go into a rage, and shout so loudly that Ive actually given myself some hearing deficiencies as a rezult.
i never used violence though, mainly because i kept a lot of my rationality during this, and i knew for a fact that while i was scary when i lost it, my strength is pathetic. so it was a sort of controlled anger. sort of. like i cant stop myself from losing my temper, but could control myself when i did.