Barrett Foa has portrayed the character of Eric Beale on "NCIS: Los Angeles" since 2009, but acting is just one item on a long list of his skills. In addition to being a TV star, Foa is also a singer and a dancer who has appeared on Broadway hundreds of times. He learned how to puppeteer for the roles of Princeton and Rod in "Avenue Q" on Broadway. He was the first member of the cast who was a singer first and later learned to puppeteer, whereas all earlier members of the cast had been puppeteers first. "I was the guinea pig," he explains. Foa says he went to "puppet camp" for a crash course during the audition process. (Scroll down for a video of Foa and his castmates performing a song from "Avenue Q.") Foa also learned how to dance in flippers when he was in the chorus of "Mamma Mia!" "Dancing in flippers is one of my special skills," he says with a laugh. "You can't just start flippering when you hit the stage - you have to be flippering backstage." When he was a camper at