The 26-year-old Brit reflects on the life-changing impact of 'Slumdog Millionaire' — good and bad ("It was like being in a gold-plated cage") — and why he so aggressively pursued and transformed himself for the film for which he just became only the third person of Indian descent ever to receive an acting Oscar nom: "A script like this — a journey like this — is never gonna come around again."

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