Great cartoon of my childhood, that ended with no ending..
A story of a Samurai, that is fighting an ultimate Evil entity - Haku, that deceives him, and send the warrior into the future, where he tries to get back to the past and finish the fight
The fanmade video I made, what do you think of it? :)
Full episodes:
http://www.toonova.net/samurai-jack
There's also a last season that ended the show on Adultswim and will be streaming on particular dates:
http://www.adultswim.com/videos/samurai-jack/#JdzgjcJXfZqw
Good day