made from this region has been immense," said the megastar.
Bachchan started his speech in Bengali and has also recited a stanza from Rabindranath Tagore's poem 'Banglar Mati Banglar Jol'. He later shifted to English for masses to comprehend.
He said with novels like Sarat Chandra Chattopadhyay's 'Devdas' Bengali literature provided a rich and fertile ground for many screenplays.
"So our love for cinema goes beyond 100 years," he said.
Explaining the importance of mainstream commercial cinema he said it was the voice of the poor and downtrodden.
"In our films justice is done in three hours. But for many of us to get justice in real life takes us three generations," said the actor.
Seated next to West Bengal Chief Minister Mamata Banerjee, Bachchan, fondly called 'Babu Moshai', recalled how he had got his first job in Kolkata decades ago.
"This is also the city where I first dreamt of becoming an actor, Kolkata will always have a special place in my heart," he said.