You could give two directors the same script and both films would turn out different by the choices of their camera positions, lighting, locations and emotion from the actors. As a director you have your own style so it's down to you to view other directors artwork.
Watching films is like being in a lesson in school there are so many things you can pick up on and learn by analysing but by doing this you will never watch a film the same way agian when you go to the cinema, somtimes it can make the expirence worse (anyone seen Naked Lunch) or you apreciate the directors work, the writers story and the overal look of the production.
DVD Extras is obviously another way of learning the process but try work out how they shot that scene before it comes out on DVD, did they use green screen, was it a stunt man, where those jokes in the script and did they shoot that on a 1000fmp? (frames per second)
