Amitabh Bachchan hardworking but playful: Irrfan Khan
Amitabh Bachchan hardworking but playful: Irrfan Khan

Actor Irrfan Khan, who is sharing the screen space with Amitabh Bachchan and Deepika Padukone in Shoojit Sirkar's upcoming film 'Piku', says Big B was fun to work with.