TOP 5 SCARIEST MOMENTS
WATCH JACK'S DEATH DEFYING STUNTS
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Play1 Kick boxing fight in Thailand
"I've never really felt this scared before. It's going to be carnage," says Jack, before going into battle as Sharon and Ozzy cheer him on
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Play2 Climbing El Capitan
Terrified Jack describes the task as: "Like someone learning to ride a bike one week, and entering the Tour de France the next"
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Play3 Bungee jumping in South Africa
The story of Jack's jump. Before: "I hate everyone." During "Mom's gonna kill me." After: "Thanks for not killing me"
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Play4 Deadly jungle wildlife in Belize
"I'm just praying that a tarantula doesn't fall on me," says Jack. And don't even get him started on the deadly vipers and killer bees
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Play5 White waterfall jump in New Zealand
"I'm terrified," says Jack as he paddles along. "I just gotta gun it." But can he do the death-defying jump without bailing?
