Bollywood megastar Amitabh Bachchan, who was declared the Best Actor at the 57th National Film Awards for his performance in Paa on Wednesday, thanked son Abhishek Bachchan for his achievement. This is the third Best Actor National Film Award for the 67-year-old and his fourth overall. Amitabh played a progeria patient in Paa, which bagged four National Awards, including best Hindi film, best supporting actress and best make-up.
