Or along the grocery store peeve, the people who see you looking from one side of the aisle and stand directly infront of you as if you were to look through them. Hello! I'm standing here out of your way so you can pass freely and this is how you repay me.

Or, if I am in your way, please say excuse you. I'll move, I promise. I once had a lady stand behind me and just clear her throat over and over. I purposfully didn't move because I was waiting for her to say "excuse me." I ended up asking her if she needed some water.