Yeah I have rage issues and I get that feeling quite regularly. I know what you mean when you said you felt energised and evil and stuff .. definitely!! I find if you keep thinking about it, the energy and evilness escalates and you start to be tempted to actually act it out.. feels awesome but its not good!! It's like you are feeding the beast. So instead I try to think more about the horrible jail sentence I would end up with and eventually that sort of spoils the fantasy and brings you back down to the planet earth.