I think it's a huge credit to the filmmakers (Anthony and Claire Bueno) that they were able to elicit such fond reminiscing from the cast and crew of Ghostbusters - the making of which has become at this point, well-trod subject matter. As documentaries go, it's very tech-heavy, but everyone on camera is personable and clearly happy to be there, and I enjoyed myself considerably. Though Bill Murray's absence is inescapable, I applaud the efforts of all involved to coalesce and make up the difference. There's some real heart to this.
The icing on this dessert is the late Harold Ramis, and it is an undeniably joy to see him again.