My Mum was terrible for this and Danielle can be bad for it too. What do you think of people who speculate out loud what they think will happen when you're watching a movie, TV episode or even playing a game? It infuriates me! Especially when they're right, because it takes away any surprise you might have got and it's just... grr!

Worst in movies, probably. Not so bad in TV episodes because there is a long series (eg. Lost) and you're all bound to wonder out loud after a while, and it's actually interesting to hear what people think. But movies and games? No! Never!