i very much agree with the prev. posted...Great examples
Kadhal Sadugudu in Alaipayuthe
Kannalanae in Bombay
Kaatre en vasal in Rhythm
The title group song in Kadhal Azhivathillai with Dhanush well choreographed
Ennai vilai in Kadhilar Dhinam
thats all i can think of now