Always. My front door has a tall narrow window next to it and if I sit in the wrong chair in the living room I can see the shadow of everyone who passes by (it has cheap stick on stained glass stuff on it so no one can actually see through the window). I tend to be jumpier during the day and more watchful at night, if that makes any sense. Strangers come and ring the bell during the day, so I'm always on guard for that. At night, well, that's when the bad things happen, so I monitor the windows more carefully. Hope that makes sense.