The Fruits Basket opening theme 'For Fruits Basket' is classic. Very beautiful indeed, and I'd say it is my fave opening, closely followed sejak the Azumanga Daioh opening 'Soramimi Keiki'. My favourite ending theme is the Azumanga Daioh one 'Raspberry Heaven'.
Muzik wise I Cinta the openings for Ghost in the Shell, Inner Universe and Rise. As well as the first Death Note opening. Any of the Fullmetal Alchemist openings. Descendants of Darkness's opening is wonderful too. There are a lot of amazing openings out there.
Air Opening Kanon 2006 Opening Deadman Wonderland Opening Chobbits Opening Lucky bintang Opening 1 Full metal alchemist Opening 4 Steel Angel Kurumi Opening Toradora Opening 2 Blue Exorcist Opening 1 Myself; Yourself Opening Angel Beats Opening Spice and serigala, wolf Opening 1 Spice and serigala, wolf Ending (Whistle around the world) Elfen lied Opening