Just saw it, didn't even know it existed until I was scrolling through HBO on demand. TKJ is one of my favorite graphic novels.
I was expecting pure shit, so I guess I enjoyed it more than many. The 1st half hour was abysmal, and I was confused as to what the fuck was going on because it wasn't TKJ. But once it started with the actual adaptation, I was surprised how faithful it was, and enjoyed it.
Obviously the graphic novel is better, but they got a lot of things right, and it was just fun to see, to revisit a favorite graphic novel of mine as a moving cartoon.
And it is kind of funny that the very best Joker isn't any of the big-name actors on the silver screen, but rather a voiceover on cartoons. Mark Hamill owns that role.
They botched the delivery on the final joke at the end, and I had to erase the first 30 minutes from my memory to get into the rest, but I still enjoyed it quite a lot overall.