Hawks directed several films considered to be classics in a number of different genres:
There is a story, which may be apocryphal, that Hawks once told Ernest Hemingway that he could make a good movie out of the worst thing that Hemingway had ever written, at which point Hemingway challenged him to make a movie out of To Have and Have Not. Hawks' film may not be a classic, but it includes a number of memorable scenes, including Bacall's exercise in teaching Bogart how to whistle.
External Links
IMDB: Howard Hawks