Gage Skidmore · CC BY-SA 3.0

A screenwriter who, with writing partner Edward Kitsis, joined ABC's Lost midway through its first season and stayed through its final one, then co-created Once Upon a Time, the fantasy drama that ran for seven seasons reimagining fairy-tale characters in a parallel world. The pair won a Writers Guild Award for Lost's first two seasons and went on to co-write the film Tron: Legacy, building one of American television's more durable writing partnerships out of an earlier run on lower-profile shows like Felicity.