Kiku Sharda recently appeared on 'Kaun Banega Crorepati', where he brought humour and nostalgia while interacting with Amitabh Bachchan in his Bachcha Yadav persona. During the episode, he revealed that 'Kaala Patthar' is one of his favourite Bachchan films, prompting Big B to share that his first job in a coal factory helped shape his performance in the movie.