Apart from a unique story line, great performances, direction and screenplay, the chemistry between the characters sets this feature apart. I watched this movie as a child and then through my life many times and it's still a great entertainer. The dialogues are the backbone and so is the truthfulness of the characters. Each time you see it you discover a new funny reaction from a character. For example: Silent swearing of Om Prakash; Sharmila and Dharmendra flirting behind the curtain and suspicious Om Prakash; Om Prakash saying: "Kuch to pehen ker ja rahan hoon. Tumhari behen ne to muje bilkul nanga kar diya hai...." ha ha!