In November 1994, Dallas Willard spent a day at Biola University for what was called a Colloquium. He gave two lectures the first of which deals with a topic which is extremely important for Dallas: intentionality.
If you're not sure where to start when it comes to Dallas Willard's philosophy, this might be it. And one of the unique things about this lecture is the audience is not made up of philosophers but it is made up of Christians. The latter means that Dallas shares aspects of his philosophy which were "less interesting" for his colleagues and students at USC.
But even if you're an old friend of Dallas's philosophy, this lecture should be highly interesting to you.