Or is your mind just playing tricks on ya?!

Optical illusions are awesome. In this particular one, what appears to be a flat picture, is moving. It seems like the room that you are looking into moves with you. Like you're looking into different angles of the room.

That, of course, isn't the case. How would a picture do that? Turns out, the "picture" is a 3D optical illusion. While you look at it from straight on, it appears flat, and moving. However, when you look from the side, you can clearly see the 3D cutout that make it so.