I have watched this movie many times.I dont even remember when I watched it first time, but the movie is such that u cant help watching it again and again. Its typical of those 70s movies but the only thing and most importantly the thing that matters differs is its treatment .This is what makes this movie watchable again and again.Every character in this movie is worth remembering esp amit but the mother s character is also very important to entire theme of the movie which can be summed up in one dialogue mere pass ma hein From Amitab to shashi kapoor every body played there part very well and most importantly fitted into their roles very well .Amitab played that other son who goes to wrong path very well .Everything was which was happening in society at that time was to an extent shown through the conflict between amitab and shashis characters.Even an underworld element was shown very well at that time which was given even more subtle treatment yrs down the line by ramu company(but thats a different story) The screenplay written by salem javeed was perfect and ppl still remember the movie scene by scene