Last week, this fast-moving, effortlessly watchable talk show launched Season 16, with another unpredictably entertaining hour: Washington revealed the secret of his “magic finger,” and Capaldi talked of giving a young Doctor Who fan in Budapest a gift he wouldn’t fully appreciate for months. This week, the guests include Emma Thompson, who was hilarious last time she visited Norton’s show, and Hugh Grant, whose self-deprecating humor is perfectly attuned to Norton’s.