Oh, my! I'm surprised that I didn't notice this thread earlier, because I am the *QUEEN* of pet peeves. So much so, in fact, that I authored a highly Google-ranked page on the subject (number one for many years and still within the top five without having updated it for over four years). In real life, I'm actually pretty easy going, though, considering how much everything pisses me off!
A huge pet peeve of mine is when a famous person wins something they say, "This has been such a humbling experience." Winning something is the opposite of humbling!! It actually justifies how great you think you are!! It is only humbling if you thought you were going to win but you lose. Then you can realize that you may not be as good as you thought. Therefore, you are humbled.
I also don't like the how the letters are arranged on a GPS system. They are actually in alphabetical order instead of the "QWERTY" format. It takes me forever to punch in an address.