What it is: an awesome and totally worth acting class, so good that doesn't matter if the story is or not close to the comics, JoaquÃn Phoenix went full on this one and doesn't disappoints.
What it isn't: is not the comic book joker, is not an strong story about a sociopath. Is a dark drama about an mentally ill person but not the evil mind that you may expect.
Definitely is a must watch just the acting is worth, I liked also the art, but don't expect to find the classic joker from the comics because the movie failed hard on that.