Secret Origin: The Story of DC Comics
[video=youtube_share;N1lSTjClKfs]https://youtu.be/N1lSTjClKfs[/video]
This is a surprisingly good documentary with a great collection of comics experts going through DC's history, warts and all. I am only 20 minutes in, but it's been great so far.
Once I saw who one of the talking heads was, I realised why I hadn't heard of this documentary before now. ;) I can't imagine DC wants to draw any attention to this guy, even though he's clearly an expert on the history he's going over.