Depends on why I'm angry. mad at the wife? Walk away and cool down for a minute or twelve and analyze why.
Angry at some fucktard at work that's being an idiot? I make it a point to illustrate why he is such a thing and if I really feel the mood write out instructions on how he can avoid being a fucktard in the future. I just did this last night, in fact- I left instructions for how a person on first shift should properly fill out his paperwork so my job behind him won't be such a miserable pain in my ass.
I'm expecting my boss will be waiting when I arrive this afternoon.
Maybe I'll be late. :-D