New Delhi: He has worked with industry's top most directors but Nawazuddin Siddiqui says it is Anurag Kashyap with whom he shares a special chemistry as the filmmaker shocks the actor in him every time they work together.

The formidable pair of Nawazuddin and Anurag are back together for an upcoming project tentatively titled "Raman Raghav" after giving two big hits "Gangs of Wasseypur- Part 1" and "Gangs of Wasseypur- Part 2".