Yousuf Karsh is one of Canada's and the world's premiere portrait photographer of the rich and famous. A 50 minute documentary was produced recently of which I will give one clip, I notice more clips on the side of this youtube, it is a good documentary:
http://www.youtube.com/watch?v=iYxgxoKIL3gAnd I think you will like this:
http://www.youtube.com/watch?v=rQq2kAPDNA8&feature=related