Well. This was a movie.
I watched Joker earlier today and I'm still kind of processing what I saw. It's something of a difficult thing to work through. Because of that, and because of the structure, it's almost impossible to review this movie without spoilers. But, briefly, a spoiler-free review first:
This is a heartbreaking character study of a man on the edge falling over. Much has been written about how it's drawing from King of Comedy or Taxi Driver, but the movie I kept thinking of was Falling Down. However you slice it though, this is a very uncomfortable movie to watch, but it's just breathtaking and amazing. The other movie I kept thinking of was Requiem For a Dream. Yeah, this movie is a bit of a gut-punch. It's very, very good, but it's a tough sit at times. You've been warned. This also isn't so much a comic book movie as a psychological horror movie.
Now for more depth. Spoilers ahead and sprinkled throughout.