The scene where Arthur blatantly calls Randall out for giving him the gun that got him fired, in front of all of their coworkers. As he leaves the workplace, he turns around and says, "I forgot to punch out." before literally punching the punch clock right off the wall and laughing his ass off right after.
Thomas Wayne showing himself a genuine protective father by punching Arthur in the face hard over him harassing his son Bruce at their home, and making a believable promise he'll kill Arthur if he ever goes near Wayne Manor again.
The scene where Arthur finally dons the Joker suit and makeup. When he makes his way down the stairs, he doesn't just walk down the steps, he dances down them, now fueled by his newfound confidence. Arthur is a new man now, and there's no going back.
After his little celebratory dance, the two cops from earlier spot him and proceed to chase him around the city. Once they get to the subway train filled with clown rioters, everything starts to work out in Arthur's favor. He swipes a clown mask from a random guy, who attempts to attack him but accidentally hits another person, sparking a huge fistfight that buys Arthur some time. When the cops attempt to stop the fight, one of them ends up shooting the assailant dead, prompting the entire clown mob to lunge at the duo and give them a No-Holds-Barred Beatdown. Victorious, Arthur walks right up to the downed cops and dances in their faces, before leaving the station unscathed.
Murray realizes he has a killer sitting next to him on his show on live TV with who knows how many potential victims including himself in the room, and he still manages to stay calm while he tries to interview him to find out what kind of man he's facing.
Murray: Okay, so that's it, you're crazy. That's your defense for killing three young men?... Youre finished? I mean, theres so much self-pity, Arthur. You sound like you're making excuses for killing those young men. Not everybody, and I'll tell you this, not everyone is awful... You don't know the first thing about me, pal. Look what happened because of what you did. What it led to. There are riots out there. Two policemen are in critical condition, (Arthur laughs) and youre laughing, youre laughing. Someone was killed today because of what you did.
When Joker is taken into custody after Murray's murder, an ambulance suddenly crashes into the cop car, killing everyone in the vehicle but the Joker. The clown rioters riding the ambulance find his unconscious body, recognize him as their hero, and safely pull him out of the wreckage. When he finally comes to, Joker gets on his feet and is suddenly greeted by an enormous crowd of clown masks, who cheer victoriously for their beloved leader. Now embracing his new, permanent identity as the Joker, he spreads the blood from his nose onto his mouth, forming a bloody, rictus grin. He then turns to his loving followers and stands triumphant, in a Awesome Moment of Crowning way. Arthur finally got what he wanted: respect, attention, and a sea of smiles. And he couldn't be any happier.
This version of the Joker does what his counterpart from The Dark Knight couldn't; he made Gotham fall into madness.
The Joker's rant to Murray just before he shoots him in the head. The murder itself is clearly Disproportionate Retribution, but he's definitely not wrong about the way society treats mentally ill people, which makes the rant satisfying to watch.
This whole scene, from Joker's Black Comedy, him shooting Murray dead and then shooting his corpse again, and his total nonchalant reaction to the crowds screaming in panic, manages to encapsulate the character of the Joker perfectly — he's both hilarious and terrifying. This incarnation isn't mostly funny like Batman (1989) 's Joker, nor is it flatout terrifying like The Dark Knight 's Joker. This clown hits the perfect balance between the two and, just in that way alone, becomes a very accurate depiction of the character.
Joaquin Phoenix and his interpretation of the iconic Joker laugh. It comes off as someone who has a serious mental problem as opposed to just an infamous trademark of a comic supervillain, which makes it even scarier yet accurate.
The fact this movie, of all movies, won the Leone d'Oro grand prize at the Venice Film Festival took everyone by surprise.
Gaining the enthusiastic approval of Mark Hamill, who loved the new direction it took from his own "old school" portrayal.
With a $247 million global opening weekend, Joker grossed more than any other October release. With a $96 million domestic opening weekend, that means it's out-done Justice League. ($93.8 million)