I would say "Ko" is one of the best movies I have seen in recent times - Right from the cast, to performance by each actor, to the cinematography, to the story line, to the beautiful locations where songs were shot, all complemented each other so well that I yet again feel like wanting to watch the movie all over again in the theatre and been recommending everyone whom I come across to watch it as well :)
I have allways been a fan of Jeeva's and after watching this movie I'm only in more appreciation of Jeeva's , Ajmal's and Pia's ... However, I thought Karthika (the lead lady in the movie) could have performed a lot better or thought did not live up to the character she was portrayed. The make up used on Karthika has also been flawed and looks like her face has been un evenly painted .. sans this, every aspect of the movie is applaudable !
If you have some time in hand, or rather take sometime off your routine to catch up this movie in the theatre .. It truly is worth it all !!