Daniel Radcliffe, Mariska Hargitay and the Happiest List on Earth

With war, political wrangling and price hikes jockeying for headlines, it’s a rare thing to sit for an hour with a large group of strangers and focus on the small pleasures in life. But that’s what the show “Every Brilliant Thing” is all about. Since 2013, Duncan Macmillan’s audience-participation-heavy play has been performed in dozens of languages in hundreds of locations across the globe. It revolves around a central character who writes a list of all the good things in life for a depressed parent. And while it tackles dark subject matter — including frequent mentions of a loved o...