But while most viewers are questioning the artistic merits of Todd Phillips' take on the iconic DC villain, others have taken something rather different from their cinematic experience.
Namely, that they want to bonk the maniacal clown.
Yep, it's apparently a thing. There is an army of fans out there who have been leaving screenings with the urge to bed Joaquin Phoenix's version of Batman's nemesis.
But if you don't believe us, just have a look at some of the thirrrrrrrsty tweets people have been sharing just moments after watching the film.
See. Told you.
But this isn't the only showing of, let's call it appreciation, for Phoenix's acting.
According to the good folks over at Pornhub, the release of the new flick has led to a monumental spike in searches for 'Joker' on their site.
A statement from the erotic giant, said: "Our statisticians found that in just four days, searches containing 'Joker' reached 741K with a peak of 291K on October 6th. Bang!"
And it's not just Pornhub that has witnessed an engorgement of interest in the Crown Prince of Crime. The guys over at xHamster say they have seem more than a 1,300 percent increase.
Alex Hawkins, VP of xHamster said: "People are now fantasising about the f***ing Joker. Human sexualisation is weird sometimes, but the Joker searches have risen over 1,300 percent, which is astounding."
And who knows, there may be more Joker content in the pipeline as Phoenix has already said he would be up for a sequel.
The actor sat down with Popcorn with Peter Travers, where he told the host that he's dead keen for another movie so they can see just how deep the rabbit hole goes with the Joker.
Phoenix said: "I wouldn't have thought of this as my dream role. But now, honestly, I can't stop thinking about it.
"I talked to [director] Todd [Phillips] a lot about what else we might be able to do, in general, just working together, but also specifically, if there's something else we can do with Joker that might be interesting.
"So, it ended up being a dream role. It's nothing that I really wanted to do prior to working on this movie."
Joker is in cinemas now.