Bollywood megastar Amitabh Bachchan was nostalgic while shooting for TV commercials for the upcoming season of "Kaun Banega Crorepati" (KBC) at a studio because he had inaugurated it over 30 years ago.

"At the Film City...completing the promotional TVCs (television commercials) for 'KBC'. We shot at the studio floor one and a whole lot of memories came flashing by. Floor No. 1 that we were on, was inaugurated by me, " Amitabh posted on his blog.

He also recalled some of the films he shot for at the same location.

"...it was on this very same floor almost 30 years ago we did some of most honourable and distinguished films 'Barsaat Ki Raat', 'Kala Pathar', 'Sharabi'...the list is endless, " he added.

Amitabh says he was most touched to see the junior artists at the shoot.

"...what was most endearing was the 'junior artists' at the shoot. Some of the ladies in the crowd have been with me since the 70's, older but still junior artists. Remarkable longevity of these very noble artists, but sad in a way that they never matured on to something bigger. They sat there wondering if I would recognise them, talk to them - but I did and it was a joy as ever, " he posted.