Nora Ephron’s son, Jacon Bernstein, wrote and directed this tribute to his late mother, so it’s a real family affair – and one thing he inherited, clearly, is his mother’s gift for candor. This comes out not only in what he films and chooses to show, but in interviews with such close friends of his mother’s as Meryl Streep, Mike Nichols, Tom Hanks, and Rob Reiner.