Sneak Peek: Meet PEOPLE's Ones to Watch 2014

Get a first look at some of the 40 up-and-coming stars we're celebrating this year – before they hit it really big


"I was a loud kid," the actor, who just came off Mad Men, says of playing the enthusiastic one on A to Z. "In summer camp a counselor was like, 'You won't shut up. You should be in my play.'"