What is joaquin phoenix s most celebrated role?

Joker, released in 2019, stars Joaquin Phoenix as Arthur Fleck, a mentally ill party clown whose descent into nihilism sparks a violent uprising in Gotham City. The film, directed by Todd Phillips, offers an alternate origin story for the iconic DC Comics villain and has been widely praised for Phoenix’s intense performance. His portrayal earned him the Academy Award for Best Actor, cementing the role as the pinnacle of his career. The critical acclaim and box‑office success of Joker have made it the defining performance in Phoenix’s filmography. As a result, discussions of his most celebrated role almost always reference his work in Joker.