In the 70s and 80s, the writer duo Salim-Javed had immense success with 20 out of 24 films becoming hits. Their partnership with Amitabh Bachchan started with Zanjeer. On its 25th anniversary, Salim-Javed discussed ideal casting and Bachchan's best performances with Lehren In a flashback video. This year, Zanjeer celebrates 51 years.