Paa (Hindi: पा, English: Father) is a 2009 Indian comedy-drama film directed by R. Balakrishnan (credited onscreen as R. Balki) starring Amitabh Bachchan, Abhishek Bachchan, and Vidya Balan. The film is based on a rare genetic condition known as progeria and places emphasis on a father-son relationship. Amitabh Bachchan and Abhishek Bachchan, in real life, are father…