Ghostbusters (2016) - 3 out of 4
Honest Disclosure: I had zero interest in seeing this film till this thread cropped up on BPS. Nothing to do with the whole controversy. In fact, like @Ken, I'm all for wider representation in Hollywood. The only reason I didn't think this was worth a theater visit was the unfunny trailer and reviews like this one from reviewers I respect.
But hey, I think thanks are in order for @Ken and @peng. This was totally worth spending 2 hours of my time on a Saturday. And contrary to popular opinion, it did not tarnish the memories of one of my most beloved films. Instead, it worked as a wonderful homage to it and paid respect to the classic in a multitude of different ways; not including a post-credits sequence that I was not expecting, but that may have just set up a sequel. It made me want to rewatch the original in the best possible way. (Also, I have to admit that I choked up as "For Harold Ramis" came up over the closing credits.)
Also, I am not sure I would call the casting of four extremely funny comedians in these roles as stunt casting. If anything, I would probably say that about the casting of Chris Hemsworth. There's nothing in particular about the role that requires the casting of the God of Thunder. Of course, he is required to be a human specimen, worthy of envy for almost every men with a pot-belly. But that could have been achieved by casting any model. I have gained a lot of respect for Hemsworth with this role. He absolutely nails it and has a lot of fun doing so.
I also agree with @Ken that the thing that works about the film is that none of the characters are stand-ins for the original four. Never was I going, oh that is Bill Murray. And that is Harold Ramis. And so on. I felt that these characters had distinct personalities all their own, and that worked in favor of the film.
I know Kate McKinnon and Chris Hemsworth have been rightfully praised in this thread because they're absolutely brilliant. But I think Leslie Jones gets some great lines as well. There's one scene in particular where the race card is played in the most brilliant of ways. Wiig and McCarthy play the more traditional central character roles and are good doing so. (Additionally, I didn't hold an opinion on this pair either way before the film, but now I'm looking forward to rewatching some of their old work.)
The cameos from the original four are all brilliantly placed. Murray's is the largest and, dare I say, works the least. Dan Aykroyd plays off his character in the original. Ernie Hudson makes a token appearance towards the end. Ramis is immortalized as a statue in an university in a blink and you'll miss it scene. (Weaver and Potts also make appearances, with the former getting a choice line that pokes fun at men.)
The film falters towards the end as every summer blockbuster is wont to do, succumbing to a special effects-laden climax over subtlety. Also, I think it's just me, but I the fact the film did not even have one scene where someone went "Don't cross the streams" was slightly disappointing. Not huge, but it is a line I was looking towards to in the entire film.
All in all, I had a blast with this one. But the best part was that the audience seemed really into it as well. In particular, there was a group of women who were cheering loudly for some of the best moments in the film and having the time of their lives. Yeah, that gave me a lot of good vibes.