10+ years ago I saw a quite a good exhibit at a contemporary art museum called "Trash Culture." I suppose roughly speaking it was about stuff that's so bad it's good, probably lots of things that John Waters would like. The exhibit included things from people like Ed Wood, The Shaggs, Florence Foster Jenkins, probably CDs by William Shatner AND Leonard Nimoy, etc. It also included
Margaret Keane, who I don't think I'd heard of before. Anyway, no idea if the movie is any good, but it's an interesting subject.