Batman (1989)

Directed by Tim Burton, Batman (1989) stars Michael Keaton as Bruce Wayne and Jack Nicholson as the Joker. The film redefined the modern superhero genre with its darker visual tone and gothic production design. Based on the DC Comics character, it marked a major shift from earlier camp interpretations and became one of the most influential comic book adaptations of its era.

Från IMDB:
The Dark Knight of Gotham City begins his war on crime with his first major enemy being Jack Napier, a criminal who becomes the clownishly homicidal Joker.