He made his acting debut in the Bengali films with the legendary icon
Uttam Kumar in
Mayamrigo (1960) and
Dui Bhai (1961), both superhits, then he relocated to
Bombay. In 1962, he performed in the film
Bees Saal Baad which was actually offered first to Uttam Kumar but he rejected and was the first film produced by
Hemant Kumar, and then followed by
Kohraa,
Bin Badal Barsat,
Majboor,
Kaise Kahoon, and
Paisa Ya Pyaar. His filmography includes
Mere Sanam (1965),
Shehnai,
Aasra (1964),
Night in London,
Yeh Raat Phir Naa Aaygi (1966),
April Fool (1964),
Kismat (1968),
Do Kaliyan (1968),
Ishq Par Zor Nahin and
Sharaarat (1972). He was usually paired with notable actresses such as
Asha Parekh,
Waheeda Rehman,
Mumtaz,
Mala Sinha and
Rajshree. Biswajit appeared in
Rekha's debut film
Anjana Safar (1969) (later re-titled
Do Shikaari). Though
Anjana Safar was blocked by the censors and not released until 10 years later, a scene from the film which shows him kissing Rekha appeared on the pages of the Asian edition of
Life magazine. Rekha had complained that during the filming of one of the romantic scenes, Biswajit unexpectedly kissed her for 5 minutes against her will, and the entire crew started cheering and whistling while she was in tears. Between acting in
Bollywood movies, Biswajit has returned to Calcutta to act in Bengali films, including
Chowringhee (1968) and
Garh Nasimpur with
Uttam Kumar and
Kuheli and much later,
Srimaan Prithviraj (1973),
Jai Baba Taraknath (1977) and
Amar Geeti (1983). Apart from acting, Biswajeet also sings and performs in concerts. In the 1970s, he cut a disc of two Bengali modern numbers
Tomar Chokher Kajole(1970) and
Jay Jay Din(1969), composed by
Nachiketa Ghosh and
Salil Chowdhury Respectively. == Later career ==