Emma Stone
Before the Oscar winner made it big, she initially tried to break out on VH1’s “In Search of the Partridge Family” in 2004, when she was among hundreds of actors who went through a series of grueling auditions to nab a spot in 2005’s “The New Partridge Family.” The “La La Land” star obviously had the chops to make it to the end when she scored a role in one episode of the subsequent series.