Never understood why Skittles is good, but here
Chu Chu Lovely Hinamizawa
as for skittles, it's nicely sync-ed up to the lyrics, has a decent editing job (add-in effects), and the song itself is nice. a few more:
One Piece ("I'm on a Boat") http://www.youtube.com/watch?v=PaXeHwqKyK4
Azumanga Daioh ("1985") http://www.youtube.com/watch?v=GPZip5FRisI
Why do I feel like you're taking videos posted on /a/...?
1985? I prefer the K-on! version
Never was a fan of lip-syncing.
I like more MAD's that sync voices and sounds to songs
And I'll just add one more
lol, half of them are from /a/ and i found the others elsewhere. i don't go there that often but i don't think there are usually amv threads