Shallow Grave was brought up in another thread, and I remember one shot when the roommate that went crazy (not Alex) was up in the attic, either with the money or was watching the money. Anyway, in order to keep an eye on his roommates, he drilled holes into the floor so he could look down, and one of the shots is just him sitting in a corner with these beams of light coming up through the holes he drilled. It felt like he was some sort of monster.