The term India's most successful actor usually evokes thoughts of the usual suspects - Amitabh Bachchan, Shah Rukh Khan, Dilip Kumar, or even Rajinikanth or Kamal Haasan. India's most successful star Malayalam screen idol Prem Nazir holds multiple world records courtesy of his prolific career. Prem Nazir starred in 720 films as lead, with over 400 of them hits How …