Two of television’s most famously deadpan comedians shared a surprisingly touching moment on Friday, when Norm Macdonald closed his last stand-up set on Late Show with David Letterman with a tearful tribute to the man he called “the greatest talk show host who ever lived.”

“Mr. Letterman is not for the mawkish, and he has no truck for the sentimental,” said the former “Weekend Update” host in his emotional send-off. “If something is true it’s not sentimental. And I say in truth, I love you.”

You can watch Norm’s full (very good) set below: