Rick McCallum, producer of the Star Wars prequel trilogy, answers a few questions How far through post production is Return of the Sith? When will it be complete? We'll be working right through the middle of April and we're pretty much where we hoped we would be. We'll be heading to England in February for some final pick-up shots, some dialogue looping and the scoring of the movie with John Williams. Do you feel good about the results so far? We're very happy with where things stand. George's style of filmmaking builds re-shoots and pick-up shots into the schedule before production even begins and that hasn't changed for Episode III. Have there been any major hitches during the making of this last film? None at all. How much preparation went into the climatic duel between Anakin and Obi-Wan? How long did it take to film? Hayden and Ewan are incredible. They spent more than two months training with our stunt co-ordinator Nick Gillard for hours every day. Then they went into rehearsal with each other, and seeing them work together was awesome. Then the whole thing took only four days to shoot. How would you sum up the experience of producing the prequels? You described it before as being ''a battle' and 'a war of nerves'? I could say that for any movie I've worked on. That's a producer's job, especially when you're working with a writer-director who is as enthusiastic as George. From the first day of shooting in 1998 we've been developing new technologies, creating new ways of doing visual effects and working with thousands of people. These are huge productions. But I would sum up the experience of producing the movies in two words: incredible fun. I'm really going to miss these movies. What was the atmosphere on set in Episode III? I think the crew, the actors and the technicians were sorry to see it end, more than anything else. It was like the last days of school. It's been a lot of work. Sometimes you didn't think you would make it, but it changed your life and you like to think you're going to go out there and have a positive impact on people with the work you've done.