After a bunch of bit-roles, that stellar-lead as Faisal Khan in Gangs of Wasseypur turned Nawazuddin Siddiqui into the thinking man’s actor. He has gatecrashed into the big league with a slew of riveting performances in recent times. Giridhar Jha speaks to him after his latest release, Babumoshai Bandookbaaz, sprang a surprise at the box office despite being embroiled in multiple controversies, including a run-in with the censor board for its ‘bold content’.