Om Prakash and Amitabh shared a nice chemistry. Starting from D'Silva in Zanjeer, Jijjaji in Chupke Chupke, they did 8 movies together. Alaap (AdvocateTriloki Prasad), Do aur Do Paanch (Ustaad), Lawaris (Dr. Goel), Namak Halal (Daddu/Dasrath Singh). Best of the lot and the last movie from this combo was Sharaabi (Munshi ji). Another movie by them in pre-zanjeer era which also was highly praised by critics is Parwana.
Om Prakash joined All India Radio in 1937 on a monthly salary of Rs 25. He was known as "Fateh Din", a radio personality and his programmes made him popular all over Lahore and Punjab.