We all know Bob Ross as that gentle "Joy of Painting" guy with the soothing voice and comforting afro. But apparently, there's some kind of dirty secret behind the scenes that we didn't know about. And it will be revealed in the new Netflix documentary "Bob Ross: Happy Accidents, Betrayal and Greed". Netflix released a 20-second clip yesterday that you can see below, that says, quote, "We want to show you the trailer for 'Bob Ross: Happy Accidents, Betrayal and Greed'. But we can't." Then an unidentified voice says, quote, "I've been wanting to get this story out for all these years." The movie hits Netflix a week from today. Bob died of lymphoma in 1995.He was only 52.