Batman: The Killing Joke (2016) is a gripping animated adaptation of Alan Moore's iconic graphic novel, delving deep into the psychological warfare between Batman and the Joker. The plot follows Batman as he hunts for the escaped Clown Prince of Crime, only for the Joker to launch a brutal attack on Commissioner Gordon and his daughter Barbara (Batgirl) to illustrate his twisted philosophy that one bad day can drive anyone to madness. This dark, R-rated thriller explores themes of sanity, trauma, and the eerie parallels between hero and villain.

Directed by Sam Liu, the film features stellar voice performances from Kevin Conroy as Batman and Mark Hamill as the Joker, reprising their legendary roles with chilling intensity. The animation captures the gritty, noir-inspired aesthetic of the source material, though some narrative expansions in the first act have divided fans. Despite its controversial elements and an IMDb rating of 6.4, the movie remains essential viewing for its profound exploration of the Batman-Joker dynamic and its faithful rendition of one of comics' most infamous stories.

Viewers should watch Batman: The Killing Joke for its mature storytelling, philosophical depth, and standout vocal work. It's a must-see for DC fans seeking a darker, more psychological take on the caped crusader's world, offering a haunting look at the fine line between justice and insanity. Stream it online for a thought-provoking experience that stays with you long after the credits roll.