Daniel Radcliffe stars in Every Brilliant Thing, which officially opened on Broadway on Thursday, March 12. It's an audience-participation heavy show, written by Duncan Macmillan with Jonny Donahoe, that follows a young man who decides to come up with thousands of wonderful things about the world in hopes of helping his suicidal mother, who suffers from depression. Radcliffe, 36, - who has starred in plays and musicals on Broadway for years - is great in the tricky part, which often finds him enticing random audience members to play various roles throughout the 70-minute production.