Putting his faith in the science of buoyancy, Todd Sampson ties himself to a giant cluster of helium balloons in an attempt to defy gravity. (Final)

Harnessing the incredible power of air pressure, Todd Sampson attempts to climb a 13-storey building with nothing but two vacuum cleaners strapped to his back.

Todd Sampson puts the law of conservation of energy to the ultimate test by releasing a one-tonne wrecking ball centimetres from his face.

Todd Sampson takes a leap of faith by bungee jumping with two interwoven phonebooks, and nothing but the friction between the pages arresting his fall.

Facing an AK-47 rifle underwater, Todd Sampson trusts the extraordinary power of resistance to stop a bullet before it hits him.

Todd goes feet first into an inferno with only a dousing of water to protect him.