Irene Jacob is superb in this

Cleanin' Up the Town: Remembering Ghostbusters (USA, 2019) - first time: 4.25/5
Crowdfunded making-of/documentary of the comedy classic, much better than I thought it would be - well edited with some interesting tidbits though curiously, despite what I initially thought, just about the first movie (the opening animation shows the ghost logo making the peace sign for GBII)
I don't know when all the interviews were done but some cast members look like they hardly aged!

Sadly, Bill Murray is a notable absentee from the documentary
