Samurai Jack was an American animated television series created by animator Genndy Tartakovsky that aired on Cartoon Network from 2001 until 2004. It is noted for its highly detailed, outline-free, masking-based animation, as well as for its cinematic style and pacing.
The plots of individual episodes range from dark and epic to light-hearted and comic, but typically follow Jack, a time displaced Samurai warrior, in his singular quest to find a method of traveling back in time. Many of the battle scenes in the series are reminiscent of samurai films, and since Jack's robotic enemies "bleed" oil or electricity and monsters/aliens bleed slime or goo, the series is able to exhibit the action of these films while avoiding censorship for violence.
Samurai Jack was available to be viewed by American residents via the Toonami Jetstream website. Production on the show was halted in 2004, but it was never officially canceled. In return, Tartakovsky has announced plans to direct a theatrical film, but whether or not this will be used to resolve the series has yet to be announced.
The feature film is currently in pre-production, and is being produced by J. J. Abrams' Bad Robot Productions and Frederator Films.
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Official Site: Cartoon Network
Links: Aku on the Samurai Jack Wiki Auntie Mom's Aku page TV.com Samurai Jack page