Heath Ledger as The Joker (2008)

Heath Ledger's casting as The Joker in Christopher Nolan's 2008 film *The Dark Knight* initially met with significant fan resistance, with many expressing doubts about his suitability for the iconic villain. However, Ledger's portrayal ultimately silenced critics, earning him a posthumous Academy Award for Best Supporting Actor in 2009. His intense method acting approach to the role, which reportedly included isolating himself and keeping a detailed journal from the perspective of the character, contributed to a performance that redefined the Joker for a new generation of viewers. Ledger's interpretation of the character is now widely considered one of the most compelling and definitive on-screen portrayals.