Geralt and Jack aren't incredibly alike, but this mashup really works.

The epic tale of Samurai Jack came to a conclusive end earlier this year with a final showdown between Jack and Aku. But even with a full season to build up to the ultimate end, Tartakovsky felt a little pressed for time.

After Dexter's Laboratory and Powerpuff Girls, Genndy Tartakovsky wanted to do something different for his next show -- an ultra-stylised action series that would adopt a new art style. Tartakovsky also had a reason for Samurai Jack's cinematic, sparse dialogue: He was burned out after doing two comedy shows.

Normally you should never send a producer to do a voice actor's job... except when it comes to Samurai Jack creator Genndy Tartakovsky.

Adult Swim has released a new featurette about the music in Samurai Jack's upcoming fifth season, and it's packed with a good chunk of new footage from the show. That's not the best part, though -- the best part is creator Genndy Tartakovsky, who's so excited about Jack's return he provides his own vocalised soundtrack for the footage.

Excellent news: Samurai Jack is back next month! Even excellenter news: To celebrate, Adult Swim is streaming all 52 episodes of the show on loop, available for free online with no ads, right goddamn now. You should watch all of it, of course, but here are 10 episodes you just can't miss before the new season returns in the US on March 11.

In the first full trailer for the return of Samurai Jack, it looks like mega-mystical archvillain Aku has won a decisive victory over the series' main character.