I'm so used to the NYC crosswalk buttons being useless, that when I visit other cities I'll find myself waiting at a crosswalk for 2 or 3 cycles before remembering that I won't ever get a "walk" sign without pressing that button.

On the other hand I ride the office elevator every day with people who slam on the "close door" button multiple times despite that the door closes automatically very quickly, as if slamming on the button will increase the speed of the already-closing door.