In my production courses, I guess I aim for something that could perhaps be called "meaningful fun." The emphasis is on letting each student choose the subject matter for his or her film, and then challenging the student to think deeply about the cinematic form that will most enhance the effect of the resultant film. I make it a point to expose my students to many filmic approaches, both in the fiction and non-fiction production courses.
In the more scholarly/critical thinking courses that I teach, I again try to illustrate points relating to film history, theory, or narrative structures with examples from great (and sometimes not-so-great!) films. Classroom discussion is central to all my classes.