From stuntman to internationally recognized actor, Tony Jaa, 39, recently made the great leap into Hollywood in the latest installment of the enduringly popular Fast and Furious franchise in cinemas now. Next up is a Thai-US collaboration, Skin Trade, about two detectives taking down human trafficking in Bangkok. Here, he discusses his lifelong debt to muay Thai, how Hollywood differs from Thai cinema and what it was like shooting alongside the late Paul Walker.