While the concept behind Lytro photograph is actually quite old, the technology itself is very new.
Lytro cameras are capable to taking a photo of a scene, capturing enough depth information to allow you to change the point of focus afterwards. It's a very cool effect, however the cameras are not cheap.
There is a hack out there that lets you create these impressive images without the need for a Lytro camera though. The guys at Chaos Collective have created a tool that takes a short movie and converts it into an embeded functional faux-lytro image. Below are a couple of images I've created using their tool.Enjoy!