David Letterman said The Late Shift was accurate...........
You can find his radio interview with Howard Stern in 1996, he admitted and was laughing that he bumped Higgens. The only COMPLAINT he had was that why did they get someone with RED HAIR, he said they had hours of tapes to see his hair is brown. I LMAO when Howard and Robin, asked did he wear a hairpiece or plugs, he said No, that IF he did he have the biggest lawsuit in history, because his hair is a mess. He told them to pull it, yank it or lick it. They pulled it and saw his hair was real.
They asked about Jay Leno, and he said he has NOTHING TO SAY TO HIM EVER. Howard said did he really love Johnny Carson like he claimed, and David said he did for his whole life, that he was his hero and still is.
He said the portrayal the parts with him, that were wrong was that Morty was NOT the valid asset he was portrayed but he was laughing so I don't know if he was joking. I watched the movie, and it was stupid for them not to tell Higgens to dye that hair, or do something, because all I kept focusing was that was it was bright red. David admitted that the actor looked like him, except the hair. and he did go "Hee Hee" all the time.