On the "reality" programs - Masterchef, Bake-off and Potter, before announcing the winner (or the loser, as the case may be) the presenter says, "And the winner is" and then there's a five second pause.
I'm guessing that you get the same thing on the umpteen other shows of this kind.
I find this immensely artificial. The presenter already knows the answer, it isn't like he's trying to make up his mind. The five second pause is there, I guess, to "build the tension". Well, in my case, it builds the irritation.
And the worst presenter of the five second pause is .... 1... 2 ... 3 ... 4 ... 5 ... ... ...