With his super cute smile and dreamy blue eyes Sterling Knight is nothing short of a perfect gentleman-even though he doesn't always play one. He's appeared on "Hannah Montana," "Grey's Anatomy," "The Closer," and currently stars on Disney's newest hit series "Sonny with a Chance" as super-hot (kind-of-full-of himself) Chad Dylan Cooper. Sterling also stars with Zac Efron in the movie Seventeen Again.