Los Angeles, June 14 - Michael Douglas got his family got together for a screening of A Father, A Son: Once Upon a Time in Hollywood, a documentary about his relationship with his father, Kirk Douglas. However, papa Kirk couldn't be there due to recent knee surgery. But Michael's son, Cameron, and wife Catherine Zeta-Jones did the family proud. Catherine tried to stay in the background, leaving the Douglas men to shine, but we managed to convince her to pose for a few photos by herself. Non-family members Red Buttons, Doris Roberts and Dyan Cannon, who still looks amazing, joined the Douglas' at the Academy Theater, as did Goldie Hawn and Kurt Russell, who stopped by unannounced for the screening.