This was the biggest fear of Shoojit Sircar for 'Piku'

"All three of them are absolutely poles apart. Mr Bachchan will constantly do rehearsals and then he will go for a take and that will be the final take. Deepika will do rehearsals but while doing that she will try to grab her movements, performances. "Irrfan is very different. When he is acting and when not, is difficult to tell. It was great fun for me to have three different styles of acting. Irrfan said if somebody wants to learn acting and what is the process for it, they should work with Mr Bachchan. He was completely mesmerised by Big B's style of acting," Shoojit said.