In Tamil Cinema if you are taking the list of Kissing scenes, You can't list out without Kamal Hasan.  He has been acting at least two seconds kissing scenes in all of his movies.  In Punnagai Mannan  his kissing scene with Rekha was very famous in that time... But now a day kissing scenes are occupying almost all Tamil Movies.
Tamil Actress Sneha

In Tamil Cinema Actress Sneha is knowing for family oriented character roles. When she was acting with Kamala Hasan in Vasool Raja MBBS, Even it is unwritten rule that kissing scenes is must for Kamal Hasan movies. But, Sneha was escape from that in this movie. But, Now Sneha too joined in that list. 
Sneha now acting with Director Cheran in Karu Palaiappan directing "privom santhipom" Cheran and Sneha are couple that enjoyed in their first night starting with 6 seconds kissing scene.  When Karu palainiappan explained this scenes, Cheran was nerves. But, Sneha was encouraging   Cheran and it was shouted after it took seven takes. privom santhipom unit telling this scene is coming good without any vulgar.

Kissing Scenes in Tamil Cinema Video Special