So after some long thought on things, I decided to pick out an idea that was something that *legitimately* creeped me out, and one thing kept coming to mind: a face staring at me through a window. Malicious intent is bad enough, but fortunately it can't actually physically interact with the room. But, what if it could?
Thus I came up with the The Face In The Window.
By the way, yes I have heard of the Doorman, SCP-303, but after I had come up with this one. I think there's enough differences (lack of physical presence, ability to interact with people, ability to actually contain the bastard, etc.) to have mine stand on its own, but any comments or criticisms would be appreciated.