Aamir Khan visits the sets of Big B's 'Kaun Banega Crorepati'

As he was also shooting for 'Dhoom 3' at Yashraj Studio, Amitabh Bachchan requested him to pay a visit to meet his fans on the sets.

Aamir Khan and Amitabh Bachchan

Also...
The Big B was among the first to watch the theatrical trailer of Dhoom 3. He was specially invited for a screening by producer Aditya Chopra. The veteran star states on the microblogging site Twitter, "Adi Chopra calls me to his preview theater to view the first trailer of 'Dhoom 3' .. astoundin !! Such finesse!!" The theatrical trailer releases today in IMAX format.

Aditya Chopra