Directed by Pushpendra Mishra, 'Ghoomketu' is being produced by Vikramaditya Motwane.
"The images belong to a cameo that I am doing for film titled 'Ghoomketu', being produced by Vikramaditya Motwane and his Company, which also includes Anurag Kashyap.
"Vikram did that wonderful film 'Udaan' and he and other like minded makers involve themselves in films that are now beginning to find space and honour and visibility and acclaim among the more discerning audiences of the country and the world," Bachchan posted on his blog along with the pictures of his look.
"I play many different avatars in the shoot. I play myself of course in the leathered look, in my make up room and discussing my dialogues for the coming shot in a film that is being made - a film within a film - which then moves to my make up shot, where further discussion on the origins of the dialogue, that I happen to accidentally find on a wrapping is wondered with my secretary, coincidentally called Rosy...
'Ghoomketu' also features Nawazuddin Siddiqui as the protagonist.