4x4 - Jack Osbourne: Adrenaline Junkie

Jack Osbourne and his celebrity companions take on more of the toughest challenges the world can offer. He is joined by fashion model Jodie Kidd, actor John Thomson and ex-Busted band member Matt Willis in New Zealand, where they fly through the mountains suspended under a helicopter, climb ice walls, cross a raging river on a tightrope and bungee jump from a cable car.