Ok, sorry for the DBZ reference, but.. This end of this fight transpires in almost exactly the same way as the Cell/SSJ2 Gohan fight. Naruto ascends to a new level (SSJ2) by super fast training (hyperbolic time chamber), first fails in his attempts to kill Kakuzu (who has partial immortality ala Cell), and then is silhouetted by Yondaime (as Gohan was by Goku) and then proceeds to finish the fight, then at the end falls out of the sky (presumably) and says nearly the exact same words as Gohan in "Hehehehe.. I did it." How's that for a run-on sentence? Now, I'm not complaining about it, but it's just an interesting comparison.