What series debuted the same year as samurai Jack?  Sackville
2001 in American television:  Events listed include television series debuts, finales, cancellations, and channel initiations, closures and re-brandings, as well as information about controversies and disputes included "According to Jim", "America's Test Kitchen", "The Fairly OddParents", "Fear Factor", "House of Mouse", "How It's Made", "Invader Zim", "Lizzie McGuire", "Lloyd in Space", "Oswald", "Samurai Jack", "Smallville", "Totally Spies", "Trailer Park Boys" and "Yu-Gi-Oh! Samurai Jack:  The series premiered on August 10, 2001, with a TV movie called "The Premiere Movie", before ending in its fourth season on September 25, 2004, without concluding the story.
Smallville