Directed by her Emmy-winning daughter, Rory Kennedy (HBO’s “Ghosts of Abu Ghraib”), ETHEL celebrates the remarkable life of the Kennedy matriarch, highlighted by revealing, little-known anecdotes from those who know her best: her family. Debuting THURSDAY, OCT. 18 (9:00-10:45 p.m. ET/PT) on HBO, the feature-length documentary had its world premiere at this year’s Sundance Film Festival.