I agree with everyone's beef so far. I used to be an editor, so, unfortunately, spelling and grammar errors just glare at me every time I read something containing them. Sometimes I wish they wouldn't bother me so much since it's really the content of the material that counts. Also, I had a bumper sticker on one car that said "Visualize using turn signals."

I get my dander up also over people who spout racist/prejudiced comments or stereotypes, ESPECIALLY negative ones. (I also had a bumper sticker on my car that said "Better a bleeding heart than none at all.")