Most people do this. They can't wait for you to stop talking so they can talk. Many will just talk over you(pet peeve of mine) Its like no one REALLY listens to any one else, they're too busy planning what they are going to say. I am making a real effort to actually listen to people lately. It takes a lot of effort.

People who brag about how busy they are and how many activities their kids participate in and how they are a "taxi cab" for the kids. I guess soccer moms are a pet peeve of mine.

Women who wear ball caps instead of bothering to fix their hair(soccer moms). It really doesn't look as cute as they think it does.

Parents who don't make their kids behave, and let the kids interupt them when they are talking.

Cell phones, I pretty much dislike them unless its an emergency. It irks me when someone is driving stupid and dangerously while yapping in to the cell phone.