The video above is a rather amazing TED talk by Ramesh Raskar, who is one of the leading researchers in the field. He does some amazing demos of light actually moving in slow motion through a coke bottle. That might not sound mind-bendingly awesome, until you remember that light travels at roughly 186,000 miles per second. In fact, at one point, he explains that if you were to watch a video of a regular bullet traveling the same distance at that frame rate, it would take an entire year. That's insane.