At last night's Broadway opening of Equus, we learned that Daniel Radcliffe has grown cautious about picking up his mail. Director Thea Sharrock was getting "some very peculiar letters from men who had a very, very profound connection with my character," says Radcliffe, who plays a horse-obsessed young man. Learn about the occupational hazards of performing naked from the likes of Dominic Cooper, Glenn Close, and others in our Party Lines slideshow.