Check out this new behind-the-scenes look at the making of Charlie St. Cloud featuring (shirtless!) Zac Efron. Zac has been all over New York City promoting his new flick this week -- and even took time to see his High School Musical BFF Corbin Bleu star in the Broadway musical In the Heights. Charlie St. Cloud opens in theaters this Friday, July 30.

Will you see Charlie St. Cloud? Do you like Zac Efron?