Why Barbra Streisand's SAG Awards Honor Was a Surprise to Stepson Josh Brolin (Exclusive)

Josh Brolin chats with ET's Rachel Smith on the red carpet at the premiere of 'Dune: Part Two' in New York City. The actor reacts to stepmom Barbra Streisand's SAG Awards speech for her Life Achievement Award, sharing what surprised him most as he watched celebrities pay tribute. He also dishes on his friendship with Jason Momoa after the 'Aquaman' actor praised Josh's 'Dune' book. Plus, Josh 'dramatically' reads a description he wrote for 'Dune: Part Two' on Instagram. 'Dune: Part Two' is in theaters on March 1.