I always find it fascinating to hear professional directors talk about their craft. I want to make films once out of school, and I find it entertaining, informative, and educational to see how all of the different filmmakers out there approach filmmaking.
My favorite book about film, Moviemaker's Master Class by Laurent Tirard, is simply a series of interviews with professional filmmakers like Scorsese and Jean Luc Godard, simply talking about their varying methods they utilize to direct. The questions they are asked are not simple questions that you tend to see asked toward directors, like what was it like to work with such-and-such; these questions are more in depth, like asking how these varying directors go about working with their actors, how they decide the shots for each scene, etc.
I was able to run across this video from MakingOf.com that is an interview with Darren Aronofsky (The Fountain). Here Aronofsky answers in-depth questions about the art of directing and how he approaches it. It is a very interesting interview for anyone interested in making films.