i should probably preclude this feedback by first stating that despite seeing one, maybe two episodes of Samurai Jack, i've never been a fan. and although i do have a full copy of Star Wars: The Clone Wars--the Tartovsky series, not that stupid 3D crap--i have no great love of it or any of his other CN era creations (though i do hold in reserve some minor appreciation for Dexter's Lab).
that said, i am extremely impressed. and loathe though i may be to accredit the more obviously professional and more time-given-to-well-done-works or as simply unnecessary by more prodigious artists--besides, those who know me i am usually more rapt to devote my attention to the underdogs and noobs--i have to say that the animation is spot on.
and though there is no necessary syncing (lip-wise or such), the position of animation to music is most compelling. everything about it is... flawless. hence, 5/5. there is nothing more to say.