Everything coming to HBO Now in September 2019

6:24am PDT - August 21st, 2019    what to watch - Mashable

Summer may be coming to an end, but there's still time for a movie marathon or two. This September, HBO Now is offering up a slew of cinematic staples. Classics like RoboCop and The Spongebob Squarepants Movie (yeah, you heard us) are streaming alongside newe…