I am not saying 'Go see Hairspray' specifically. But it's good if you spare the bucks to see at least one infamous show now that you've come all the way to London. 'We will rock you' would be a safe start; and alternatives like 'Mama Mia' and 'Dirty Dancing' are also available for those of you with stomachs to stand them. Leicester Square is the place to pick up discounted tickets at tkts booths. Expect a queue, though. People actually do care for art.