Favorite Fight Sequence Ever: Anime Edition

Many of you beat me to them:

Naruto
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Ep. 99ish
1)

Spoiler:

Fight between Jiraiya, Tsunade, and Orochimaru....DAMN! How sick that sequence was, what with the giant summon beasts and overkill techniques, three of the world's strongest ninja duke it out! Then Tsunade uses her regeneration ace....but then Orochimaru says "fuck that! I'll just choke you then" and ooh damn that was good

sometime waaay after that
2)

Spoiler:

Kimimaro vs. Gaara was another good one. Gaara eventually covers the entire field making it a desert, but Kimimaro really would have destroyed Gaara anyways....had he not been sick! (literally, since the blade was like a millimetre away from making contact)

Read Or Die OVA
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nearing the end
3)

Spoiler:

Yomiko vs. the electricity guy - clever how she made it rain paper blades as one of the last moves. Then again the usage of paper makes most of the fights in the OVA awesome.

The Law of Ueki
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Sano's Awakening
4)

Spoiler:

Okay, every battle with Sano or Ueki's toughest opponents is a highly intriguing and interesting battle, ending in the most unthought of method possible. Altough when Sano gains his level 2 ability of making the steel magnetic, combined with the fact that he's a genius, this made for some really interesting and foreplanned attacks, especially against a six armed gunner.

Jam it back in, in the dark.