Bollywood actor Abhishek Bachchan has said that he believes in doing one film at a time, which he considered an ideal formula.

He said this while speaking at an event to launch the Idea GSM services here today.

Bachchan, who will be seen playing the role of Lord Ram in director Mani Ratnam's upcoming film 'Ravana', shared candid moments with mediapersons on the occasion.

He has just wrapped up shooting for the film with wife Aishwarya Rai Bachchan.

"Well 'Ravana' is nearing completion. I wrapped the shoot. We have the post-production work going on. Next month, I am gonna start shooting for Ashutosh's next film. So these are the films I am working on right now. I like to work on one project at a time," he said.

The film 'Ravana' has been shot in south India and in some parts of Sri Lanka.

The movie was initially scheduled to go on the floor in the first week of October.