The cut on Sally's neck is first seen on the left side of her neck (when facing her). Later, the cut is seen near the middle of her neck on the right side.
At 1:14:42, The ambulance that takes Leo to the hospital the camera shot is reversed so the word 'Ambulance', is reversed.
The video game system Leo uses is a PlayStation 1 but the controller is black which means it is designed for a PlayStation 2.