Mammootty saw Sivaji in a special screening Thursday in Cochin.
He was in all praise for Rajnikanth for his acting. He also called him a down to earth person in real life.
'Rajnikanth does not have to be starry at all because a halo follows him and his biggest virtue is that he has no pretensions,' Mammooty said.
He appreciated Shankar and Rajnikanth for coming out with a real entertainer.