Cleanin' Up the Town: Remembering Ghostbusters
Starring Sigourney Weaver, Annie Potts, Dan Aykroyd, Harold Ramis, Ernie Hudson, William Atherton, Jennifer Runyon, Ivan Reitman, Alice Drummond, Timothy Carhart
It's a documentary movie, and has a rating of 7.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Germany.