In 'Southpaw,' Gyllenhaal plays a boxer who grew up in foster care and is struggling to be a father to his daughter. He also discusses his roles in 'Donnie Darko,' 'Nightcrawler,' and working with Heath Ledger. Director Sean Baker wanted to make a film about L.A.'s transgender sex workers, but first he needed to find someone who knew that world well. Then he met Mya Taylor, and together they made 'Tangerine.'
