Article continues below advertisementMel Brooks shares a poignant memory in the new HBO documentary Mel Brooks: The 99 Year Old Man! about being with his dear friend and collaborator Carl Reiner on the night he passed away in 2020."I just didn't want him to go. I just couldn't - I wouldn't accept it," Brooks recalls as he describes the moment Reiner collapsed in the bathroom of his Beverly Hills home. "I loved him so much."Article continues below advertisementSource: MEGAMel Brooks shared an emotional memory of Carl Reiner's final night together.