What act of "common courtesy" do you appreciate the most?
Hmmm... that's a hard one. Probably people being on time. When you do what you say you are going to do. That sort of stuff.
Mean what you say, and say what you mean!!!!!
Cut and paste Tracy & Cara's answers
People who are late! which is DH! hes always late picking me up for work, drives me crazy! my time is important too!
I run late a lot so I am not too picky when someone else is late.
I think it is really nice when someone holds a door for you. Not even holds it open and lets you go first... just holding a door in general. Here at the hospital, we have to swipe our badges quite often. To get in the parking lots, to get in the building, to get to certain areas of the building and also to get to the other buildings through the tunnels.
I think it is rude when someone uses their badge, sees you coming, knows you work here because you are wearing your badge... but they let the door slam shut right before you get there. I ALWAYS look for and hold the door for employees and/or volunteers!