New Delhi, Feb 3 (ANI): Bollywood legend Amitabh Bachchan promoted his upcoming movie, 'Shamitabh', in the national capital along with the star cast of the film recently. The trailer showcases Bachchan in a rugged look with heavy beard and unkempt hairstyle where as south Indian actor Dhanush is surprisingly seen in an identical avatar in the promo. The word, 'Shamitabh', is the amalgamation of two letters of Dhanush's name 'Sh', followed by Amitabh's name. Speaking at the event, Big B spilled the beans on the much talked about plot of the movie and said.. Directed by R. Balki the movie is set to release on February 06.