Right now there is this mannequin challenge thing going around which is not actually creepy in the least but it has reminded me of how chilling wax statues, mannequins and CPR dummies can be. Basically, anything that looks like a human being but without the spark of life can give me the creeps.
This is also where you hope your eyesight is not conducive to your seeing things out of the corner of your eye. Did that statue just move? Was that mannequin holding both arms up before? There is an episode of Dr. Who that taps into this paranoia called Blink. It is about the Weeping Angels (I'm sure you've seen them if you rotate in sci-fi circles enough) who can only move when you aren't looking at them. Likewise, I recall a Twilight Zone where the mannequins all come to life at night in a department store and have their own little dramas and insecurities. Hell, the movie Waxworks is all about a wax museum that has displays that come to life if you step inside the roped off area.
Just, if you look human, and aren't, stay still please.