Bollywood megastar Amitabh Bachchan had something very special in store for everyone yesterday, sunday, as he accompanied Saurabh Nimbkar, the singer who sings daily in mumbai's local trains to raise funds for cancer patients and the sight of Big B apparently took the commuters by surpise.

Amitabh who accompanied Saurabh, clapped along as Saurabh strummed his guitar. He also sang a snatch of his own very popular song,Rang Barse.

Amitabh said, "Saurabh Nimbkar, sitting to my left in the picture, that came on our show #AKRHZ, plays the guitar and sings on local trains and collects the meagre money he gets from co-passengers, to distribute to the less fortunate cancer patients and their families, in the city. His story was heart breaking, I felt I would want to sit by him and travel the distance he does, do what he does, in a show of support and spirit for his incredible thinking."

This kind and humble gesture of Big B soon started trending on Twitter and here are some of the tweets:

Amitabh Bachchan ✔@SrBachchan

T 2059 -Local from VT to Bhandup to support Saurabh, who sings in locals for charity to cancer .. sang with him ..

Amitabh Bachchan ✔@SrBachchan

i do not think of super awesomeness .. feel they that give so much to society, need to be shown respect and support https://twitter.com/poothegr8/status/665870951649677316 …

Desi Diva @style_icon13

Reel hero turns into real hero. @SrBachchan's humble act inspires everyone, every second! #BigBAurHeroKaSafar