The Longest Moment
Sasuke's long awaited battle with Itachi begins with the Uchiha brothers throwing genjutsu after genjutsu at each other. Sasuke seems to have Itachi cornered and asks him a few questions of the Uchiha massacre. Is Itachi not the only one involved in the Uchiha massacre? And does Sasuke still not possess enough hatred to defeat Itachi?
Aired 19/11/2009EP 135 - The Longest Moment

Naruto: Shippuden
Naruto: Shippuuden is the continuation of the original animated TV series Naruto. The story revolves around an older and slightly more matured Uzumaki Naruto and his quest to save his friend Uchiha Sasuke from the grips of the snake-like Shinobi, Orochimaru. After 2 and a half years Naruto finally returns to his village of Konoha, and sets about putting his ambitions to work, though it will not be easy, as he has amassed a few (more dangerous) enemies, in the likes of the shinobi organization; Akatsuki.
(Source: Anime News Network)