Bollywood much awaited trailer of Amitabh Bachchan`s `Shamitabh` is finally out. Megastar Amitabh is seen in his superstar avatar, along with Dhanush and the rivalry between the two is worth a watch. There is some sort of personality clash between Dhanu- `SH-AMITABH`. Dressed in nice tailored suits both actors look elite and elegant. Also, young and newcomer Akshara Haasan leaves an impact in the trailer.