I've read about Gary Coleman throughout the years, but never had much interest in him, and never watched his TV show. Thus, I did not know if I would watch this entire documentary. I ended up having no problem watching it until the end. The doc moved along nicely and wasn't repetitious. It does offer some good insight into his life, but not enough to make it more than a sympathetic look, lacking in critical observations.
For example, why did Gary Coleman choose to marry the woman he married and still live with her after they divorced? She was a not-too-bright user who hit him, just as he hit her. With his fame and medical condition, he could have easily found a kind, nurturing woman, such as a nurse, to marry; who would have dedicated her life to supporting and taking care of him. Did he want to keep feeling like a victim, and replay over and over again the way he felt others used him?
His parents were interviewed and they weren't portrayed as the demons some think they were. His first agent was interviewed and he also did not come across badly. His best friend was constantly interviewed, and there seemed nothing nefarious about their friendship, even though his father had his suspicions. The only one who came across badly was his ex-wife, but I somewhat doubt she was responsible for his death. The two of them were a trainwreck waiting to happen, and you don't need a person to cause a trainwreck.