I can't. Nintendo is my favourite music publisher (not just in games, overall). Choosing a few would be incredibly hard. Plus, I don't know the names of most of them.
If I were to make a list, I would edit it around 25 times eventually. It's better to just not do it (for me).
Good idea for a thread though!
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS