You know him as: Oldest Gallagher brother Lip on Showtime's series about a large, dysfunctional family.
Why we like him: Lip could've been your run-of-the-mill slacker punk, but White's heart-filled performance turned him into one of the most sympathetic, likable characters on the show. The formerly unknown actor has more than held his own alongside William H. Macy and series star Emmy Rossum.
Where else you've seen him: A surprising amount of roles involving troubled teens. He broke out in 2010's Chace Crawford-fronted "Twelve."
-- Jean Bentley, Zap2it