The Big B has added one more `A` to his list of friends. It`s a well know fact that two of the `A`s are Amar Singh and Anil Ambani.

Before you scratch your head and try to figure out who he is, let`s spill the beans. The mystery friend is none other than Mr Perfectionist, Aamir Khan. Ever since Aamir appeared on Amitabh`s `KBC`, the two have been as thick as thieves. Though much younger in age, Aamir and Amitabh have formed a mutual admiration society between them. Amitabh has lent his famous baritone for `Lagaan`, while the latter has agreed to do a film with the senior Bachchan for AB Corp. Wow! It seems to .