Intense dancing

[pacotacoshell]

I'm looking for some intense dancing, like the waltz or ballerina dancing. Anything that isn't too moe.

So far, I have:
Guilty Crown (that one scene in the last episode)
Rideback
Princess Tutu

[Zanzaben]

So I can only think of a bunch of individual scenes and not entire anime except for Tutu which you already have.
These are mostly ballroom dancing scenes meaning pairs.

Kanon, episode 7
World God Only Knows, episode 3
Toradora, 19
Zero no Tsukaima: Princesse no Rondo, 7
Kono Naka ni Hitori, Imouto ga Iru!, 2
Code Geass R2, 9
Romeo X Juliet, 1&2 (I am only assuming this seeing as how the play opens with a ball)

[pacotacoshell]

I had a feeling that there was an episode of Code Geass that had dancing in it, but it's been so long since I've watched it.

Thanks!