Last night I was watching CSI, and during one scene I thought I saw something strange. So I rewound and went frame-by-frame. Here's what I saw:
Here's the full sequence of frames. In this scene, the flashlight is being panned from right to left, causing the frame to wash out because of the bright light. Instead of just pure light, however, there's clearly a shadow of a face embedded in the frame.
The episode I was watching is called A Thousand Days on Earth, which was about the investigation of the death of a small child. The face in the frames above looks like it might be the face of the child who died, but I'm not sure.
This only lasted for 3 frames, and was one of those things you would've missed if you blinked, or maybe thought you saw it, but then forgot and moved on.
I wonder if they have done this sort of thing before, and also if it adds a bit of drama to the show since it throws you off balance for a little bit. I have a feeling I'll be watching for stuff like this more closely in the future.