He has gone from a chubby party boy to a slimmed-down thrill-seeking teetotaller and now Jack Osbourne is in New Zealand looking for his next big adventure.
The son of rocker Ozzy Osbourne gained fame on mad-cap reality show The Osbournes for his often wild appearance, cheeky comments, drinking and drug use.
He is back in New Zealand to film the third season of his own TV show Jack Osbourne Adrenaline Junkie and says his trips here have been a real highlight of making the show.
He says it is the world capital of extreme sports and New Zealanders have it all.
Osbourne is doing a slackline over a canyon, bungy jumping from a helicopter and caving during his New Zealand visit.