I find Saul Bass interesting because of his variety; he's involved in both design and film, and encoprorates aspects of both into each other. The mood of most of his work is extremely modern and simple but at the same time draws your attention and connects to the subject matter in a way that isn't cliché.
Three of his works (videos):
http://www.artofthetitle.com/title/anatomy-of-a-murder/
http://www.artofthetitle.com/title/around-the-world-in-eighty-days/
http://www.artofthetitle.com/title/seconds/
