Carl Boenish and the other founding fathers of the BASE-jumping movement take us through some of their earlier jumps in our exclusive clip from the upcoming documentary Sunshine Superman. For those unfamiliar with BASE-jumping, the term is an acronym for "building, antenna, span, and Earth," the four surfaces these daredevils jump from as they parachute to the ground. The sport is considered much more dangerous than skydiving, since they are jumping from lower altitudes and have less aerodynamic control.

A heart-racing documentary portrait of Carl Boenish, the father of the BASE-jumping movement, whose early passion for skydiving led him to ever more spectacular -and dangerous- feats of foot-launched human flight. Experience his jaw-dropping journey in life and love, to the pinnacle of his achievements when he and wife Jean broke the BASE-jumping Guinness World Record in 1984 on the Norwegian 'Troll Wall' mountain range. Incredibly, within days, triumph was followed by disaster. Told through a stunning mix of Carl's 16mm archive footage, well-crafted re-enactments and state-of-the-art aerial photography, Sunshine Superman will leave you breathless and inspired.

Marah Strauch writes and directs this documentary, which arrives in theaters May 22 from Magnolia Pictures. Would you ever try the harrowing sport of BASE-jumping? Check out our exclusive clip from Sunshine Superman below, and let us know if you would hurl your self off a building, antenna, span or the Earth.