23 July 1975 as Saravanan Sivakumar ) is an Indian film actor , producer , philanthropist and television presenter . He has acted in several Tamil films, including the commercially successful films Nandha (2001), Kaakha Kaakha (2003), Pithamagan (2003), Perazhagan (2004), Ghajini (2005), Vel (2007), Vaaranam Aayiram (2008), Ayan (2009), Singam