16. Zachary Levi
Zachery Levi got his big break as a bumbling techie forced into life as a secret agent in the criminally underrated TV show Chuck. It wasn't until he was cast in Disney's Tangled alongside Mandy Moore that audiences learned that Mr Bartowski is quite a triple threat. His rich tenor is well-suited for ballads and pop standards, which leads me to one incredibly important question: How in the name of all that is good did they never think to write an episode where Chuck had to go undercover as a singer? In the long and tragic history of missed opportunities, this is right up there with that time Kevin Costner passed on Kill Bill so he could direct Open Range. Anyway, this summer will see Zachary Levi's Broadway debut in an original musical called First Date, so if you happen to be in the tri-state area, be sure to check it out and make up for lost time.