Megastar Amitabh Bachchan says he feels honoured and privileged to be under one roof with stalwarts like Sachin Tendulkar and Akkineni Nagarjuna.The 74-year-old shared a photograph of himself along with southern film stars like Mammootty, Jayram and Nagarjuna on his Twitter account."Honoured and privileged to be under one roof in the presence of legendary talent...Thank you Kalyan Jewellers," he captioned the image.Amitabh and Nagarjuna have shared screen space in ads for Kalyan jewellers and have also worked together in films like "Agni Varsha", "Khuda Gawa" and "Kaala Patthar"On the work front, Amitabh was last seen onscreen in "Pink", a court room drama. The film also featured actress Taapsee Pannu in a pivotal role.