Joker review: Joaquin Phoenix is dangerously good in a Fight Club for our time 4. At least, that was the plan. How Joaquin Phoenix Transformed His Physical and Mental Self to Play the Joker "You start to go mad," said the Academy Award-nominated actor, who … Months before winning the Best Actor Oscar for the title role in Joker, Joaquin Phoenix sat down with Robbie Collin to talk about his unconventional career.

Joker star Joaquin Phoenix is a favorite to win Best Actor at the 92nd Annual Academy Awards for his portrayal of the iconic antihero—but the role certainly came with its challenges.