Adam Shankman

Acclaimed movie producer and director Adam Shankman is best known for his upbeat, family-friendly movies, including "Hairspray," "A Walk to Remember" and "The Pacifier," but behind the scenes, Shankman says he spent years grappling with substance abuse and self-loathing. Growing up in Hollywood, Shankman, who is openly gay, remembers being "an incredibl…