I agree with most everyone, (especially you, Zip), and I have a few to add.
The word "anyways". That makes my skin crawl.
Smoking right at the entrance to a building. It's not neccessarily the smoker's fault - most places put the ashtrays right at the door. That forces us to walk through a haze of smoke to get in (to work in my case).
People who don't spay/neuter pets that aren't for breeding purposes, and don't/can't find homes for them. Guess why I have 9 cats? x-(