Well DS has just reached to age (22 months) where a no can result in the mother of all tantrums. At the moment I am just trying to put him in a safe place (but not leave him)and ignore him until he has calmed down (not always easy when you are in the middle of Tesco). I have tried the distraction technique but it resoundingly didn't work and I DONT want to resort to carrying around a bag of chocolate as a quiet bribe.
So what are your methods of dealing with a tantrum and I mean a writhing, screaming, crying mess rather than a few wails. DS isn't very verbal for his age but understands everything you say (if he can hear you above the screams of anger).