On "Finding Your Roots," Michael Douglas was stunned to learn he’s related to Scarlett Johansson, his "Avengers: Endgame" co-star. The discovery of shared DNA on several chromosomes adds a familial twist to their Hollywood connection, with Douglas expressing excitement about this cool revelation. Both stars value family deeply, with Douglas married to Catherine Zeta-Jones and Johansson juggling stardom and parenting with her young children.