Okay, so Harley Quinn comment to echo WisteriaHysteria here...
I have always liked this show, but it was always very much an "Elseworld" thing to me. Like, all the familiar characters are here, but they are changed significantly from their canon portrayals, so it is hard to say you are seeing "A good Joker story" when this Joker is so different from what you would see in other media. And, to be clear, I am well aware that this is the nature of comics and adapted media, but, like, it is the difference between "Clark Kent, Superman" and "Superman: Red Son". Red Son is a great Superman story, but it isn't about "real" Superman. This is a totally different universe, and as much as I would like to see Harley Quinn's Poison Ivy be the defining portrayal of the character going forward, I know it is not going to happen. We are more likely to see Schumacher Poison Ivy in the next Batman movie over this character.
(And don't get me started on how I would watch an entire series based on this King Shark or Clayface, but you better believe neither "personality" will ever be seen again.)
ALL THAT SAID, damn, the most recent episode is freaking (amazingly!) ur-Batman, and could slot into practically any portrayal of Bruce Wayne across any media. "Batman" in Harley Quinn has always been this weirdo in a bat costume that doesn't jibe with other versions (but, to be clear, is perfect for this universe), but this episode showed an extremely deep and nuanced understanding of exactly what makes the character tick.
And, oh yeah, it was laugh out loud funny, too. Outstanding how that works out.