Watch full movie online. Moment of Impact: Stories of the Pulitzer Prize Photographs, hosted by Sam Waterston, tells the compelling stories behind some of the world's most memorable photographs. Returning to the scene of the action, each photographer describes, in a gripping first-hand account, how they took their prize-winning photographs. The moments they captured forged history and changed lives - including the photographers own. The stories of these unforgettable photographs' own. The stories of these unforgettable photographs - many of them shown here for the first time - are as compelling and long lasting as the images themselves.