Director Ram Gopal Varma and Amitabh Bachchan have given hits and misses together and the former says that the megastar never turns down his offer.

"When it comes to favourite actor, the only name I will take is Mr. Bachchan. He trusts me a lot as a director. So far it has not happened that I have approached him for a role and he has said no.

Sometimes it (films) work, sometimes it doesn't. But somewhere he knows my commitment and that my work comes with lot of seriousness, " the 50-year-old said.

Varma has made hits like "Sarkar" and "Sarkar Raj" with Big B. He also roped him in for "Ram Gopal Varma Kii Aag" and "Rann", which didn't do well at the box office.

Of all his films, Varma feels that Big B's best performance was in "Nishabd".

"I honestly feel Big B's best performance is done in 'Nishabd', " said the director.