Plot: The Bafta award-winning funnyman is joined by actors Kristen Wiig, Kate Mara and Chiwetel Ejiofor to chat about their new sci-fi blockbuster The Martian. Plus, Claudia Winkleman and Tess Daly discuss the latest series of Strictly Come Dancing, which began in earnest earlier in the evening and actress-pop star Selena Gomez reflects on her life and times and performs her single Good for You