While a whole generation is growing up with "Netflix documentary" as a genre, docs are cleaning up at the box office, too. According to The Numbers, documentaries grossed a total of $95 million domestically in 2018, more than doubling last year's total of $44 million. A big factor in that is that there were a lot of really great documentary films this year.
Michael Moore has basically been making the same politically charged documentaries for three decades now, and back in '02 he delivered his most prominent work in 'Bowling for Columbine.'