Actor Sharman Joshi, who will be seen playing a police officer in upcoming movie “Wajah Tum Ho”, says his favourite onscreen cop is megastar Amitabh Bachchan. “My favourite onscreen cop is Mr Bachchan. His dialogues as a cop are deadly. But I haven’t taken any reference for playing this character in ‘Wajah Tum Ho’,” Sharman said. “Vishal (director Vishal Pandya) used to share some nuances for this particular character. So I added my instincts with his inputs,” he added.