Christopher Nolan on casting Harry Styles, In Nolan We Trust and masking Tom Hardy & Cillian Murphy

Watch Christopher Nolan: Movies That Made Me in full on BBC iPlayer here: http://bbc.in/2DCB9hF
(Featuring more on Inception, Interstellar and The Dark Knight Trilogy).

Visionary director Christopher Nolan talks through his greatest movies, newly remastered in 4K, including Heath Ledger's performance in The Dark Knight, putting Tom Hardy in masks, and how Cillian Murphy always ends up with a bag over his head. Plus he reveals what he took home from the set of Memento and why he cast Harry Styles in Dunkirk.

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