Paa has been one of the most talked about films in India since the past few weeks. It is a film that features father and son Amitabh Bachchan and Abhishek Bachchan where Amitabh is playing Abhishek’s father. The film is difficult for Amitabh, as he is playing a 13 year old kid but its as difficult for Abhishek to play Amitabh’s father even because it is his first film as a  producer too. We spoke to Abhishek Bachchan on Paa…