Bachchan, who is in London to promote the film along with co-stars Dhanush and Akshara Haasan, said, "A lot of people have been intrigued by the title and feel that my name has been incorporated for some kind of sensation. That is quite untrue."
"The title actually comes out of the script of the film. It's a story of two individuals who have different exceptional qualities and what happens when they come together. I give my voice to the character of Dhanush...An aspect of the film which was a first for me," explained Bachchan.
Writer-director R Balki's 'Shamitabh will hit the screens around the world on February 6,
"Balki has a very intellectual, sensitive mind. He thinks differently and has always made stories that have not been the regular escapist fare that you see in Hindi cinema. And I can say with certain amount of confidence that this is a plot that has never been seen before at least in Indian cinema, even may be true for cinema worldwide.
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"It's been a great joy to be able to live with his thought process," said the 72-year-old actor, who has worked with Balki on two previous critically-acclaimed films - 'Cheeni Kum' and 'Paa'.
As part of the UK promotions for the film, the superstar will also be interacting with his social media fans directly at a special podcast event planned at the Apple store on Regent Street in central London tomorrow.
The recording as part of Apple's 'Meet the Filmmaker' series, will be made available to more than 800 million iTunes users around the world for free, the largest ever for an Indian film.