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
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)
Zanz Bonus Points Tally
8bit_samurai: 1, CodeZTM: 1, Eake4: 2, ibabrak: 5, Mirkosp: 4, tipsd9video: 1, uncreative: 1