Neengga vera. I can be cruel, but I am not a masochists - to try and recall the moments.
As mentioned before, he totally, almost, ruined Thulabaram with his overbearing, over the top sadness (as if the rest of the world are happy and he didn't get his share of happiness), the often downturned lips to show he is acting, and the amalgamation of emotional circus freak show that he manages within a short period of time when sometimes he is just required to be there and do nothing.
Another case in point is Deivam. A decent devotional drama derailed by the efforts of an overactor. His segment is the most painful to watch. I wished the peacock scratched him, instead of a bad guy in a different sketch. He is typical actor who is "not in the same page". I suspect alien's involvement here, but that's another matter altogether.