The actor known as "Ilayathalapathy" stars with Prakash Raj in a 2005 film directed by who?
Sivakasi (film): Sivakasi is a 2005 Tamil action film directed by Perarasu, starring Vijay, Asin and Prakash Raj in lead roles. Vijay (actor):  He is popularly known by his fans as "Ilayathalapathy" (Young commander-in-chief) or "Thalapathy" (commander-in-chief) of Tamil cinema.
Perarasu