Jack L. Warner: The Last Mogul, Gregory Orr’s documentary on his grandfather, gets the full 4K update as the film makes its TCM premiere. The film includes new footage and soundtrack. Say what you will about Jack Warner as a person and a producer but the Warner grandchildren know how to make a documentary. Orr preceded cousin Cass Sperling by over a decade with the original 1993 documentary. If you’re a fan of the studio,…"Jack L. Warner: The Last Mogul Premieres On TCM"