There are lots of innovative technology products being developed every day, but this one struck me in its simplicity and simple "how come no one thought of that before?" nature.
Samsung has a digital camera (TL255) with two LCD screens - one used as a viewfinder on the back of the camera, and one on the front of the camera so that when you're taking pictures of yourself, you can see if you have the angle right.
Simple. Functional. Surprising to me that no one else developed this in the last 15 years.