Here is an excellent audio interview with Francis Ford Coppola about the evolution of the movie THE CONVERSATION (read the script as well)  from conception, to writing, and creating. The following is commentary about the movie and it's a wonderful audio interview as presented here. Writers should try and listen to as many interviews with professional writers as possible. They offer profound insights into their artistic process and perhaps can inspire you in ways you haven't considered. Anyway, enjoy this extensive and in-depth interview.