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The Swiss climber Ueli Steck, famous for his daring high speed ascents of the world's most challenging mountains without the use of oxygen.

Lord Williams the human rights expert who advised three Labour Foreign secretaries.

Sylvia Moy who co-wrote many of Stevie Wonder's best known songs, including "I Was Made To Love Her" and "My Cherie Amour."

Captain James Dickson, the experienced seaman who was winched down onto the deck of the oil tanker Braer when it ran aground in high seas on the coast of Shetland.

And Jon Prinz, the food scientist and custard expert described by Heston Blumenthal as "brilliant and barking mad in equal measure".

Producer: Neil George. Show less