Claudia Winkleman and Danny Leigh return to provide their thoughts on the latest big-screen releases, joined by guest critic Peter Bradshaw from the Guardian. First up for their perusal are Christopher Nolan's sci-fi epic Interstellar, starring Matthew McConaughey and Anne Hathaway, and the romantic comedy Say When, which features Keira Knightley. Plus, an interview with Benedict Cumberbatch, who's starring in The Imitation Game, a biopic of wartime codebreaker Alan Turing.