old bollywood action films

‘Bollywood‘ runs through our blood….Whether it’s Amitabh Bachchan’s ” Don ko pakadna mushkil hi nahi namumkin hain”…or Amzad Khan aka Gabbar Singh’s “Kitne aadmi the ?” from the film ‘ Sholay ‘. We  know these dialogues like the back of our palm.What makes these films so popular? Is it the star cast or the dialogues?…