Joker is a 2019 supervillain origin story film directed by Todd Phillips and starring Joaquin Phoenix in the title role. Though based on the DC comic book character, this film takes many liberties with the story material by creating a background for the Joker that has hitherto been kept deliberately mysterious.
The notion of him starting out as a failed comedian comes from Batman: The Killing Joke, but other elements come from two Martin Scorsese films starring Robert De Niro—Taxi Driver and The King of Comedy. This origin story nonetheless can be reconciled with the comic book canon somewhat in that, given how the story is told from the Joker’s point of view, and given his psychotic penchant for mixing fantasy with reality, he is an unreliable narrator; so it hardly matters if events in the movie contradict those of the comic books.
Phoenix’s performance deservedly won him the Best Actor Oscar. For her plaintive, brooding cello soundtrack, Hildur Guðnadóttir won the Best Original Score. The film itself has also been praised (with nominations for such Oscar categories as Best Picture and Best Director), in spite of such controversies as the baseless fear that its sympathetic portrayal of a mentally-ill loner, who shoots people, would inspire incel murders. Actually, the film–despite Phillips’s denial of having intended any political message–is clearly presenting a drama of class war.