For me there are 3 moments that stand out as the most satisfying moments the clown got clowned.
First up for me is The Killing Joke.
One thing that often bugs me is several people end up agree with The Joker's argument that all it takes to drive someone mad is one bad day which is tries, and fails, to prove for both Gordon and Barbara. His whole argument is spelled out towards the end of the comic where he goes on a long rant about how the world sucks and we're all just one bad day from being just like him. Of course many people who quote this rant and say he has a point miss the point when Batman makes him counter argument starting with this underrated line
"Because I've heard it before. And it wasn't funny the first time."
And many of those people also miss that Gorden and Barbara didn't break after their one bad day but went on with their lives. Barbara was the one most hurt that day and she wasn't driven mad she instead kept on going and kept helping people.
It's a moment many fans of this book miss that Joker's entire argument is wrong. That's the whole point of his famous line "If I'm to have an origin story, I'd prefer it to be multiple choice." What we saw in those flashbacks wasn't real, they were just one version of his origin story that he choose to remember that day.
It's an underrated moment in a great story (with one terrible moment that other writers needed to fix) and something I feel doesn't get brought up enough.
Next up is Joker's Favor.
I'll admit this is my overall favorite of the three that I'm going to be talking about mainly because this is an average guy, no special powers and or skills who has been humiliated and abused by the Joker for an entire day. And this is one of the few times we see Joker really shit himself.
For those who haven't seen it what happens is Charlie Collins, the average man in question, confronts Joker in an ally way and tells him to stop and the Joker laughs at him and tries to bully him into working with him... This falls apart when Charlie reveals the bomb he has on him that he threatens to use to kill the Joker leading to this awesome bit.
"This is how it ends, Joker. No big schemes. No grand fight to the finish with the Dark Knight. Tomorrow, all the papers will say is that the great Joker was found blown to bits in an alley, alongside a miserable little nobody. Kind of funny! Ironic, really. See, I can destroy a man's dreams, too! And that's really the only dream you've got, isn't it?"
And Joker is left a blubbering, cowering mess, begging for his life and for screaming Batman to come and save him. And when Batman does show up Joker cowers behind him still pleading pathetically as Charlie still has the bomb and is still threatening him. Joker finally gives in and promises to live Charlie and his family alone, giving Batman everything he needs to make sure they'll be protected.
And Charlie thanks the Joker, by throwing the bomb at him making even Batman piss himself a little, only for it to be revealed that it was one of Joker's fake bombs so there was no danger. Batman laughs at this. Let me repeat that BATMAN laughs at Charlie's joke and how he just humiliated the Joker. As far as I know Charlie went on with his life and Joker never bothered him again.
This is also serves as an another great example of why Joker's theory of "One Bad Day" is wrong because Charlie had one of the worst days of his life and he comes out as sane as ever and returns to his life with a smile on his face.
Charlie Collins! The Definitive Chad!
And finally we have Batman Beyond: Return of the Joker.
While I will hold to the scene with Charlie being the most cathartic defeat of the Joker this is a close second. I've mentioned before how I hate the Justice League episode Epilogue and the ending of this movie is one of the reasons for that.
One of my problems with Epilogue is how it rewrote the character of Terry namely that he's Terry McGinnis in name only. His design is completely different, he's more brooding, he's not as talkative anymore and is all emo. Basically, he's Bruce now. No matter what the episode says the framing of the episode is saying that Terry is only special because he's Bruce's son. He didn't choose to be Batman he was destined to be Batman, he never had a choice.
And the ending of this movie shows why just turning Terry into Bruce just doesn't work. Terry did something that Batman from the DCAU never truly could, not only defeat Joker but outright break him and get under his skin.
As Bruce himself says, Joker likes to talk and he handles this by just ignoring him and powering through. But that's when Terry realizes something, he likes to talk too.
And he then becomes what Joker fears the most, a heckler. He spends the entire final fight taunting Joker, calling him pathetic, saying his jokes are lame and that his origin story is just sad and laughs at him, not because he finds him funny but just because he thinks Joker is just pathetic.
Joker then seems to get the upper hand on Terry but that was just so Terry could get in close to use a joy buzzer to destroy the microchip and the last thing he hears before his death is Terry saying "Ha, Ha."
And those are my favorite defeats of the Joker.
After the last few years of Joker often being written as a near invincible villain (with one story even implying that he's actually a Lovecraftian monster and not a human-being

And all without losing the threat he is because it would be so easy to make him seem someone we're not meant to take seriously but these stories do a great job at showing that Joker is the most dangerous adversary of Batman, someone who can hurt him in ways few other villains ever do. Which makes his defeats in these stories all the more satisfying because as dangerous as the Joker is, he's still just a man. A sad, pathetic man who would rather hurt people then admit that he has no one to blame for his evil deeds except himself.