'Sunghursh' (1968), where he confronted the senior actor unflinchingly and won the day. His performance as a mentally unbalanced dejected lover in 'Khilona' (1970) came in for lot of praise
as he projected lunacy with his eyes and unkempt looks, caring more for authenticity than appearance. In 'Koshish' (1972), he played a deaf-mute starring opposite Jaya Bhaduri.
With Jaya, he gave some of his best performances and interestingly, played her lover ('Anamika'), father ('Parichay'), father in law ('Sholay') and husband ('Silsila'), breaking all the known conventions in Hindi films! "I would love to play her son. This would complete the picture," Sanjeev had said.
Though he could not do that, Sanjeev excelled by acting nine different characters in one film, 'Naya Din Nayee Raat', blending the make-up and get-ups with his personal make-up man, Sarosh Modi and his own creativity. Unhappy and dejected in love, in his private life, Sanjeev tried drowning his loneliness in alcohol. Coupled with his weakness for good food, it resulted in a weight problem and a heart ailment.The man who had played husband, father and grand-father ironically died a bachelor.
IMDb:
Sanjeev Kumar 