Amitabh Bachchan, who has featured in lead roles in several R Balki films, recently shot a cameo as himself in the filmmaker's Akshay Kumar, Sonam Kapoor-starrer Pad Man. The scene was canned at the Indian Institute of Technology (IIT) in Delhi on Saturday. The 74-year-old shared pics from the set in which he can be seen alongside Akshay, Sonam and Balki. Amitabh and Balki have worked together in films like Cheeni Kum, Paa and Shamitabh. The Big B had a cameo in the director's last directorial, Ki & Ka.