Career: Wahlberg's film career kicked off in 1993 with TV movie The Substitute. A year later he made his big-screen debut in flop comedy Renaissance Man. Impressive turns in The Basketball Diaries and Fear made critics realise he was more than just another pop star-turned-actor. It was 1997 drama Boogie Nights that made his name as an actor. By 2000 he was a Hollywood hot property with roles in Three Kings and The Perfect Storm. Although a revamp of Planet of the Apes divided critics, Wahlberg delivered fine turns in The Italian Job remake, Four Brothers, I Heart Huckabees, The Departed and The Fighter. He is also a respected producer, with credits on Entourage, In Treatment, Boardwalk Empire, and How to Make It In America.

Career: On leaving the Army in 1997, Grylls reached the summit of Ama Dablam in the Himalayas, a peak Sir Edmund Hilary described as 'unclimbable'. He was the youngest British person to complete that feat, and also to climb Mount Everest and return alive. In 2000 he led the first team to circumnavigate the UK on personal watercraft. Five years later he headed another team which became the first to paramotor over the jungle plateau of the Angel Falls in Venezuela. In 2005, he hosted the highest-ever dinner party, which saw guests sat round a table slung under a hot air balloon. Grylls has written several best-selling books about his adventures and hosted such programmes as Escape to the Legion and Born Survivor, which has become a global smash.