Since it is near Christmas, I'll share my holiday pet peeve:
Renaming CHRISTmas with "Happy Holidays" and "Xmas".
One, you are replacing the name of the most important holiday (and on an extended note you are replacing Jesus with a fat man who gives kids presents, when Jesus is the true gift to the world)
Two, you are replacing CHRIST with an "X"! You're xing out GOD? I think that is enough said about that topic.
Any holiday pet peeves from anyone else?