i hate the words pet peeve too.
I hate it when people clap at movies, like a good movie, everyone claps at the screen , even though there is no one there to recieve the applause.  retards
i also hate it when people are eating, and the food is good, so they take a bite fromt the fork or whatever, and they start making tose mmm mmm noises while rolling their eyes back, and incessantly shaking their fork up and down trying to point to their plate to tell someone it tastes good.  It annoys me so much.  It is someone try to tell you visually that somethign tastes good and it's impossible.  Just tell someone it tasts good, give them a bite and not do the shaking fork thing.  I swear I want to rip people's heads off when they do it.
I don't like slow drivers, slow walkers, people that cut you off.