Rendering Synthetic Objects Into Old Photographs
First time accepted submitter IDarkISwordI writes "A new abstract headed to SIGGRAPH Asia 2011 provides a method for rapid execution of computer graphics, synthesized into photographs with accurate lighting and physics based on limited input from a user and interpretation by their code." The results are impressive; hard to watch the video demo (on linked page) without boggling.
The best part about this tech is that it does not require a "good" photoshop editor to sort out the light paths and shadows/reflections/etc manually, but just a person willing to graphically describe the scene using a GUI. After that, arbitrary 3D objects can be more-or-less added arbitrarily with uncanny realism.
This includes, perhaps unfortunately, realtors.
(And to the English Nazi(s) reading this: "graphically" and "GUI" are not redundant terms in this context.)
Kid-proof tablet..