FREE RUNNING AND PARKOUR
According to Wikipedia, Parkour is defined as, "A holistic training discipline using movement that developed out of military obstacle course training. Practitioners aim to quickly and efficiently overcome obstacles in their environment, using only their bodies and their surroundings to propel themselves; furthermore, they try to maintain as much momentum as is possible in a safe manner. Parkour can include running, climbing, swinging, vaulting, jumping, rolling, quadrupedal movement, and the like, depending on what movement is deemed most suitable for the given situation."
I don't care what you call it, these guys really put on a great show. It also looks like it has to be an amazing full body workout as well. Enjoy.