I Am Heath Ledger is a documentary that will open at the Tribeca Film Festival April 23, nine years after his shocking death. It includes never-before-seen footage from his life and interviews with family, friends, and Hollywood colleagues, including Brokeback Mountain director Ang Lee, Ned Kelly costar and ex-girlfriend Naomi Watts, and his sister, Kate Ledger. Absent from the trailer and the film is Michelle Williams, Ledger’s former costar, girlfriend, and mother of his daughter, Matilda.