1) Sanjay Dutt seems very happy with Ranbir Kapoor playing him in the biopic. Initially Dutt was opposed to the idea of Ranbir in the lead role. In fact, Dutt made fun of theTamasha actor’s choice of films and wondered how anyone who plays a character called Barfi can play Dutt!
2) The censor board had absolutely no problem with the content of Sanju. They passed the film with almost no cuts and a ‘UA’ certificate. The sequence showing excreta flowing of Dutt’s prison-cell was asked to be removed voluntarily “for aesthetic reasons”
3) This time Ranbir Kapoor’s father Rishi Kapoor has decided to go all-out to plug the film. Bhai, bete ke career ka sawaal hai. After the collapse of Jagga Jasoos, Rishi has abandoned his earlier policy of not praising his son.
4) Ranbir’s new relationship with Alia Bhatt has given Sanju an added edge, an edge that Ranbir is not comfortable with. After initially speaking about his burgeoning feelings for the lovely Ms Bhatt, Ranbir decided to withdraw his romantic candour from the public space because it seemed like he was using love to promote his film. So no more love talk for Sanjay Dutt.
5) Many of the women that Dutt dated are not mentioned by name in the film. These ladies are now happily(?) married and it would have been less than ethical to bring them up by name feel the makers.'
6) Several titles for the biopic like ‘Dutt’, ‘Baba’, and ‘Sanju Baba’ were considered and discarded. Finally Sanju was the chosen title. Why? Because “Dutt’s” the way they like it.
7) The real Sanjay Dutt saw and loved the film. He is apparently so inspired by what Raj Kumar Hirani has done in the film that he intends to get down to writing his memoirs as soon as possible. Perhaps Anushka Sharma can help with the typos. She plays Dutt's biographer in Sanju.
8) Sanju uses one of the most iconic songs of Sanjay Dutt’s career, Kya yeh pyar hai composed by R D Burman, sung originally by Lata Mangeshkar and Kishore Kumar from Sanjay’s debut film Rocky. The remix has been done by Amaal Malik.
9) While Sonam Kapoor Ahuja plays an amalgamation of several of Sanjay Dutt’s well-known girlfriends, Vicky Kaushal plays Dutt’s fictional best friend(Dutt had many best friends in different phases of his life). Jim Sarbh is rumoured to play Salman Khan with whom Sanjay has shared a very stormy relationship over the years.
10) Sanjay Dutt himself appears at the end of the film. So don’t walk out until the end-credits roll.