"Bob Newhart was the kindest, most hilarious man," he wrote. "He asked me to make a documentary about his friendship with Don Rickles. I was so lucky to get to spend that time with my hero.

I Have No Plans to Slow Down' Mourning Don Rickles: Bob Newhart, Billy Crystal & More Celebrate the 'Merchant of Venom' — with a Heart of Gold ...

“Bob Newhart was the kindest most hilarious man,” director Judd Apatow wrote. “He asked me to make a documentary about his friendship with Don Rickles. I was so lucky to get to spend that ...