Veteran actor Amitabh Bachchan shared a picture of him along with Dhanush from their upcoming film ‘Shamitabh’ on his blog. The photo caption read, “Dhanush and I ..he the reason for ‘Shamitabh’ .. I having reason but unknown as yet …” ‘Shamitabh’ is directed by R. Balki. Apparently, the name of the film is inspired by none other than the megastar’s name. What’s more, buzz is that Big B has also lent his voice for a song in the film.