Ethan Hawke is out and about in New York, the city he's lived in for 30 years, a place where famous faces slide past every day. He's wearing a baseball cap, a hoodie and a pair of cords. It's an outfit you might think he chose especially to look nondescript, but in reality it's because he likes corduroy trousers, though his stylist hates them and wishes to God he wouldn't wear them in public.