Mine are:
Passive aggressiveness. If you're mad, just say it!
Inconsiderate drivers. It's polite to wave if someone lets you over, and if you tailgate me, you might just die.
People being judgmental about other people's parenting choices.
When people don't know the difference between "they're" "their" and "there."
Small mindedness
When DH doesn't put a trash bag back in the can after taking out the trash. :/
Ok, I will stop now as well. Phew, if feels good to get that out!