Amitabh portrays the role of an arrogant son of an industrialist, Rajesh Khanna who is very close friend of Amitabh in this movie goes on the pursuit to avenge Amitabh's insult by a worker but ends up being a worker himself to know the cause why the worker insulted his closest friend. Amitabh does not have any songs in the movie, whereas all songs were sung by the legendary Kishore Kumar for Rajesh Khanna. The comparison between Amitabh & Rajesh Khanna is unfair in this movie as songs are an integral part of Indian Cinema. Although they both are of equal calibre in acting abilities, it was 51 Amitabh & 49 Rajesh Khanna (Kaka as he was fondly known as). Despite all the songs, Amitabh was a shade better.
People call Amitabh's angry young man roles are as stereo type, but they conveniently forget that Rajesh Khanna's many hit movies have the same ending when Rajesh Khanna would evoke maximum sympathy & for no reason would die in the end. Aap Ki kasam, Babu & Namak Haraam to name a few. He invariably requested many directors to kill his character in the end so that he gets more support emotionally from the audience, which was a successful formula for the movie makers of those times. Of course Rajesh Khanna had the knack of selecting better stories than Amitabh who was more interested in using his charisma than the story lines. For Rajesh Khanna, he always used to get the best playback singer Kishore Kumar, the best music by RD Burman & his own supreme acting ability to make a movie run. Amitabh, even the poorest script would make the film run because of him. Amitabh is the cause of poor Cinema in Bollywood now, his craze for any film ruined the quality. Latest heroes (including all khans) all follow Amitabh & not the quality oriented Kaka. Amitabh would suit in any role but Rajesh Khanna he was a misfit as an action hero or angry young man.This shows that Amitabh could do any Rajesh Khanna role but not vice versa.
Overall this Namak Haraam also portrays Om Shivpuri & AK Hangal in powerful roles. The heroes were at their supreme best after Anand where again the battle was equally fought, Rajesh Khanna having lot larger role.
